As a former McDonalds employee, I was not allowed to accept tips. The boxes are for the Ronald McDonald house, silly. Plus, uhm, we actually made minimum wage and were not performing any extraordinary service (a waitress actually sorta takes care of you, carries heavy things and ensures you're okay. a hairdresser makes you look pretty. If anyone at McDonalds should get tipped, it's the poor grill people, not the cashier.)

I did get tipped once while working as a writing center consultant. The tip took the form of cookies. It was unexpected and unneeded (because the student wrote a great paper-- it's the really shitty writers that should've bribed me) but did make me smile.

/ramble