What I enjoy about SurveySpot and Inbox Dollars is that you know how much money each survey is worth(They do NOT use a garbage point system) and they are emailed right to your inbox (No need to keep checking a website!)
Survey Spot is my favorite survey company, they offer numerous surveys worth between $1-$50 each. I have made about $20 in a month and a half for surveys that I qualified for (based on your demographics) The survey's I took were not terribly long and were actually quite interesting. There is a $5 minimum cashout sent by check. They also send communispace recruitment emails (a community that pays you in paypal/amazon..GREAT GIG to get)
Inbox Dollars is another easy way to make money that is delieved right to your email inbox (hence the name). You can get paid .50 -2.00 per survey, paid to play games and also paid to read email advertisements they send to you. You can request a check at $30.