I am a member of quite a few online survey sites, some where you earn points and the points translate to money, some where you earn money directly. Most of those send survey invitations and you answer one or two questions in order to see if you qualify to take a particular survey.
The one I have been a member of for the longest, where I get the best rewards, is Harris Poll. Even if you don't qualify to take the entire survey, you earn points each time you fill them out. You can earn between 10 points (for less than a minute) to 100 or more for complete surveys that take more time to answer. You then go to the points website and trade your points for different rewards--800 points gets you a $5 Starbucks card, etc.
I bought all of my teacher gifts with Harris Poll points this year. Each teacher got a $5 Starbucks card and they were very well received! Starbucks is one of the places (Unlike Olive Garden or Red Lobster) where $5 actually buys you something worthwhile.
I don't get any referral bonus for this, I just wanted to "share the wealth" as it were. Go sign up, you have nothing to lose.
You can see more money saving and making ideas here each Friday.