Shop items allow you to get better entertainment and stress reduction than free entertainment allows.

Price: 50
Analysis: Outclassed by Pencil Box in IQ gains, but satisfies parents and gives an Epic trait. Would be useful in situations where you need to lower your stress but can't afford to lose any satisfaction.
Price: 60
Analysis: Baby activites give more EQ and Charm than this one.
Price: 30
Analysis: Decent early-to-mid-game IQ with great stress reduction and no disappointment from parents. Outclassed by Extracurricular Reading.
Price: 60
Analysis: Boys only toy. Worse than Pencil Box, but comes with Epic trait.
Price: 80
Analysis: Good for Imagination and EQ runs.
Price: 100
Analysis: Waste of money, unless you really need that Charm so badly. But do you really?

Price: 20
Analysis: Outclassed by Coloring Pencils from before, but comes with Rare trait. Useless with Top Score parents.
Price: 30
Analysis: Good if you need to raise Constitution and also your parents' satisfaction, if you need it.
Price: 60
Analysis: Great mid-game IQ and Memory.
Price: 144
Analysis: Great mid-game Charm and Imagination. Upgrade to Playing the Piano. Useless with Top Score parents.
Price: 500
Analysis: Boys only. Good when you need extra Charm with your EQ, but can be replaced by playing Piano.
Price: 1500
Analysis: Boys only. Worse than Playing the Piano.

Price: 350
Analysis: Different toys for boys and girls, but same price and effect. No reason to have them over LP Records.
Price: 350
Analysis: Girls only. Martial Arts novel has better Imagination.
Price: 60
Analysis: Card/cooking game but better.
Price: 50
Analysis: Good Imagination and Memory. Useless with Top Score parents.
Price: 120
Analysis: Great mid-game Charm for boys. Not as useful for girls - girl only cosmetics and singer skill routes grant more charm in addition to extra stats.
Price: 1500
Analysis: Exchange money for decent stats-up and a Legendary trait.
Price: 2000
Analysis: Useless with Top Score parents. Price a bit too steep for such meh stat-ups.

Price: 30
Analysis: Probably the best memory gain since Extra Study.
Price: 50
Analysis: Good Imagination with extra charm.
Price: 100
Analysis: Girls only. Could be useful if you fail to get Album favor.
Price: 150
Analysis: Girls only. Decent Imagination and good EQ, but crazy disappointment from parents. Useless with Top Score parents.
Price: 300
Analysis: Decent charm, good EQ, but crazy disappointment from parents. Should have done a New Haircut. Useless with Top Score parents.
Price: 800
Analysis: Girls only. Bad charm, decent Imagination. Has Legendary trait.

Price: 50
Analysis: Like Idol Autograph, except a little bit more managable and comes with a Legendary trait.
Price: 300
Analysis: Great EQ and Charm, but you gotta be careful with -15 satisfaction.
Price: 600
Analysis: Great stat-ups with no disappointment from parents.
Price:800
Analysis: Less stat-ups than from YAN, but stress reduction is better than disappointment from parents,
Price: 1000
Analysis: Best Charm in game with extra stats. Might be more useful than Project Hope.
Price: 3500
Analysis: Proof that money doesn't buy happiness, but at least you gonna get that Gucci trait.

Price: 150
Analysis: Your best Constitution if you didn't get Gym favor from parents.
Price: 600
Analysis: Slighly worse than item below, but it lowers stress instead of raising. But it's endgame, why should you care about that now?
Price: 50
Analysis: Your best Gaokao activity if you didn't manage to get Gaokao favors. Note that it appears a few turns before parents start giving Gaokao favors.

You need those if you want to follow a certain profession route. Some are useful even if you're not following the profession. Note that having stat norm above 30,000 basically means that those routes are impossible to acquire for less than 999 knowledge.

Anime Route unlocks 4 different professions. Negligent Parenting recommended.
Basic Sketching
Stat norm: 2700: Imagination (Imagination +50)
Analysis:
Stat norm: 3780: Imagination (Imagination +80)
Analysis:
Stat norm: 9072: Imagination (Imag. +100)
Analysis:
Stat norm: 15420: Imagination (Imag. +100, Mem. +80)
Analysis:
Stat norm: ???: Imagination (Imag. +120, Mem. +100)
Analysis:
Stat norm: 44406: Imagination, Memory ( Imagination +150. Memory +100)
Analysis:
Stat norm: 71,049: EQ, Imagination, Memory (EQ +180, Imagination +180, Memory +120)
Analysis:
Stat norm: 113670: EQ, Imagination, Memory (EQ +200, Imagination +200, Memory +150)
Analysis:
Stat norm: 181872: EQ, Imagination, Memory (EQ +250, Imagination +250, Memory +180)
Analysis:

Girls only route. Singer route is great as an extra skilltree for Charm and Imagination focused playthroughs.
Stat norm: 2,700: Imagination
Analysis: Great early-game Charm.

Stat norm: 3,780: Imagination, Memory (Imag. +80, Charm +80)
Analysis: Like previous one, but slighly better.
Stat norm: 9,072: Imagination, Memory (Imag. +100, Charm +100)
Analysis: Better than previous one, except parents get disappointed.
Stat norm: 15,420: Imagination, Memory (Imag +120, Charm +120)
Analysis: Same as above, but better. Parents get really disappointed.
Stat norm: ??? Imagination, Memory (Imag +120, Charm +120)
Analysis: Good, but Cosmetics should be giving more Charm at this point.
Stat norm: 44,406 Imagination, Memory (Imag +150, Charm +150)
Analysis:If you got it then it means that you're dedicated to getting to the top of this skill tree.
Stat norm: 71,046 Imagination, Memory (Imag +180, Charm +180)
Analysis:Great charm.
Stat norm: 113,670 Imagination, Memory (Imag +200, Charm +200)
Analysis:3rd best Charm in game.
Stat norm: 181,872 EQ, Imaginaton, Memory (+250 Imagination, +250 Charm)
Analysis:2nd best Charm in game, and EQ and Imagination are not too far behind!

Stat norm: 2,700: EQ ( EQ +50)
Analysis:
Stat norm: 3,780: EQ (EQ +80)
Analysis:
Stat norm: ???: EQ, Imagination (EQ +100)
Analysis:
Stat norm: ???: EQ, Imagination (EQ +100, Imagination +80)
Analysis:
Stat norm: 22,756: EQ, Imagination (EQ +120, Imagination +100)
Analysis:

Stat norm: 44,406: EQ, Imagination (EQ +150, Imagination +100)
Analysis:
Stat norm: 71,046: EQ, Imagination, Charm (EQ +180, Imagination +120, Charm +180)
Analysis:
Stat norm: 71,046: EQ, Imagination, Charm (EQ +200, Imagination +150, Charm +200)
Analysis:
Stat norm: 181,872: EQ, Imagination, Charm (EQ +250, Imagination +180, Charm +250)
Analysis:

Not a very useful route due to low stat-ups. Negligent Parenting and Top Score recommended.
Stat norm: 7560: EQ, Imagination, Memory (Imagination +100)
Analysis:
Stat norm: 10,280: Imagination, Charm (IQ +100, EQ +100, Imagination +100)
Analysis:
Stat norm: 47,364: IQ, EQ (EQ +100, Charm +100)
Analysis:
Stat norm: 242,496: EQ, Imagination, Memory (EQ +100, Charm +100)
Analysis:

Stat norm: 8,000: Memory, Charm (+50 Charm)
Analysis:

Stat norm:[/b] ???: Imaginaton, Memory
Analysis: Like previous one, but slighly better.

Unlocked by buying a Piggy Bank at the shop. Will be unlocked for free by Family Business. This route is notable for a very profitable job that it unlocks. Insure that you get 5000 Charm if you're looking to become Filthy Rich.
Stat norm: 18,504: Memory
Analysis: Notable for being one of few activities to raise parent's satisfaction for 8 instead of 5.
Stat norm: 44,406: IQ, EQ, Memory (EQ +50, Mem. +50)
Analysis: Unlocks a job that allows to get very expensive shop items.
Stat norm: 47,364: IQ, Memory (IQ +100, EQ +50)
Analysis:
Stat norm: 37,890 ( I don't understand it either): IQ (Energy +20, IQ +120)
Analysis: Direct upgrade to Financing 101.
Stat norm: ?: IQ
Analysis: Unlocks an even more profitable job that requires the same energy to do.
Stat norm: 48,000: IQ, EQ (IQ +100, EQ +100)
Analysis: Worse than previous one, but has a Legendary trait.

A skilltree that has different stories for boys and girls. Nigligent Parenting recommended.
Stat norm: 3,780: Memory, Charm (+50 Charm)
Analysis: Unlocks Walk-On job (20 energy for 30-450$)
Stat norm: 9,072: Imagination, Memory, Charm (+50 Memory)
Analysis:
Stat norm: 10,920: Memory, Charm (+100 Charm)
Analysis: Unlocks Modeling job. Great Charm. Legendary trait for boys.
Stat norm: 18,506: Imagination, Memory, Charm (Charm +120)
Analysis:
Stat norm: 29,604: Imagination, Charm (+150 Charm)
Analysis:
Stat norm: 47,364: Imagination, Charm (+150 Charm)
Analysis: Unlocks Online Video Production (20 energy for 40~600$)
Stat norm: 75,780: Imagination, Charm (+150 Charm)
Analysis:

Neglient Parenting recommended due to satisfaction drops early.
Stat norm: 14,000, EQ, Imag (Imag. +50, Charm +50)
Stat norm: 22,000 (Con +100, Charm +100)
Stat norm: 47,364 (Con +300, Charm +100)

Favors are generally better than anything you get from the shop.

Face needed:
Analysis: Good early-game constitution and good stress reduction, no disappointment from parents.
Face needed: 112
Analysis: Like Community Slide, except harder to get, disappoints parents and also grants more stats.
Face needed: 176
Analysis: Good for IQ and EQ playthroughs. Satisfaction is higher than disappintment from parents. Epic Trait for boys and Rare for girls, for some reason.

Face needed: 112
Analysis: Busted. Imagination gain is equal to Painting Class and reduces stress with no disappointment from parents. Comes with Legendary trait if you're lucky!
Face needed: 123
Analysis: Pretty meh activity that disappoints parents, but it comes with a Legendary trait if you need it. Even then, only boys have a Legendary trait.
Face needed: 190
Analysis: Boys and girls have different names, but it's the same activity stats wise. I can't recommend it over Electric Piano.

Face needed: 168
Analysis: Worse version of Nindoten Games. You might want to choose this if you have very little favors from parents. Useless if you have Top Score parents.
Face needed: 212
Analysis: A study activity that raises 3 different stats for 45 in total and reduces stress without disappointing parents. Outclasses Pencil Box. You'll have higher chance of acquiring this item with Top Score parents.
Face needed: 257
Analysis: Busted AF! +60 stats, stress reduction is greater than disappointment from parents, and it also gives a Legendary trait. Useless if you have Top Score parents.

Face needed: 212
Analysis: Great EQ, good charm, parents are not mad.
Face needed: 257
Analysis: Waste of money. Get Summer Camp instead.
Face needed: 291
Analysis: Great constitution for mid-game, great stress reduction and no disappointment from parents.

Face: 280
Analysis:
Face: ???
Analysis:
Face: ???
Analysis:

Face: 347
Analysis: Great charm and EQ. Comes with a Legendary trait.
Face: 403
Analysis: Swaps Legendary trait for extra Charm, and disappoints parents more.
Face:436
Analysis: A middleground between Album and Idol Concert. Not very useful in practice.

Face: 414
Analysis: Great EQ. Charm and Imagination are a nice bonus.

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Face: 448
Analysis:

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Face: 504
Analysis: Great IQ and nice Charm.

Face: 504
Analysis: Best stats gain before Gaokao training rolls in.

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Face: 560
Analysis: Perhaps the best Constitution in game.

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Face: 582
Analysis: Tied with Tiara/Fake Tattoes for best Charm gain, except it doesn't disappoint parents as much.

Face: 560
Analysis: Useless activity. Do not waste your favors on this.
Face: 582
Analysis: Second best activity in the game. Easier to succesfully acquire with Top Score parents.
Face: 616
Analysis: Literally the best activity in the game. Easier to succesfully acquire with Top Score parents.