[Fern]

If you live near a metropolitan area, there are marketing companies that always are looking for people to either try out a new product or supply their opinion. You can expect to get paid about $50 for an hour of your time, and you're paid on the spot.

I used to do this occasioanlly when i was between jobs, and when i was a teenager, i remember going to a cold clinic when i got sick to try out various cold medications.