Sure, I started mystery shopping around February last year, and have made about 600 dollars as well as getting many different things reimbursed. Things such as oil changes, usually paid $20-25 and then reimbursed around $50. I haven't received too many chances to get my meals paid for, which company do you get those offers from?
If you can remember the instructions, and then remember what transpired during the interaction until you can fill out the survey, you might think about earning a few bucks here and there if you have the time.