HIT: Make a Sound!
Basically there's a sound clip creation contest on mTurk, that gives you the vague task of making a sound clip to alert a user of some program that something is waiting for them (up to 3 seconds long). The sound will play roughly once a week. So yah...I imagine they are going to get a lot of farts, armpit noises, and the like.
But hey the HIT pays 1 dollar and you have a chance to win $500 so check it out. I suggest going for a AOL type approach (referencing "You've Got Mail")...Some attractive sounding female going "Alert! Alert!", that although at first it will sound quite lovely by the tenth time you hear it, you will want to kill the lady.