How to get weapons by doing almost nothing:
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I will tell you how to just write something and then you get weapons.

1.Open steam, go to library and right-click on Team Fortress 2, select properties.
2.Click on "SET LAUNCHER OPTIONS" and type in:
-textmode -nosound -noipx -novid -nopreload -nojoy -sw -maxplayers 2 +sv_lan 1 +map
"itemtest". click OK.!
3.Close down everything (except Steam) and start Team Fortress 2, a window will pop
up. It'll say some things but just ignore that, then you see "(Your username) has
connected" or something like that. Now you can do something else, like read a book
or play a smaller game (nothing like WoW). After waiting some hours, go to Team
Fortress 2 properties, "SET LAUNCHER OPTIONS" remove everything and click OK, close
down everything includes Team Fortress 2 (not Steam). Then start up Team Fortress 2
again, when you are at "Select server" etc. you will see a "warning triangle" with
a 1 near it, click it and it'll say "You have new items", click on the eye and see
your new items.

ALSO

https://wiki.teamfortress.com/wiki/List_of_useful_console_commands
sick console commands lets us use good weapons and other stuff