Answering phones. The beginning is hard because you don't know the answers to questions or you forget who to transfer someone to, but once you got that down, all you really do is sit in a chair and browse facebook.
Working at the airport, I would a lot of times just help people at the kiosk, the simpliest easiest way to make money.
Lifegaurd at baby pool, bingo announcer, mime for blind people XD
What if the easiest job results in you losing your mind?
Or browse Funadvice!