My favorite has got to be Liquor Barn. You show up, talk to somebody about wine for five minutes (wine is a hobby of mine anyway), buy whatever you want and get reimbursed $20, and pay attention to whether or not they card you. The report is so short I literally feel guilty for being done in two minutes, so I even type a fast narrative in the comments section. Then you get paid by direct deposit in two weeks. Can't beat it.
On the other end of the spectrum are the burger shops for Sentry. The burger is mighty fine (way better than Five Guys IMHO) but good grief, they want the most detailed report in the entire world. I've done $120 fine dining reports in way less time. It might take 2 hours to write all the narratives and upload the pictures... and on top of that, their system is finicky so once or twice it has crashed at the very end, lost all my work, and given me brain damage. Then you wait two and a half months for a check for $14.
"The future ain't what it used to be." --Yogi Berra