Easy penny HITs: https://www.mturk.com/mturk/searchbar?selectedSearchType=hitgroups&requesterId=AVHJOEI4U42ZR I've only just now started on these, so I can't comment further. Turkopticon has 3 reviews.
I just did around 20 of them, they were incredibly easy. I'm hoping they accept, I haven't worked with that requester before :\
I've done roughly 150 of these, and all were approved within about a week. Too bad they only pay a cent each.