Work remotely for a call center. Because many call center jobs are location independent, finding work in this field is an easy way to earn some money from home. Dozens of sites list job openings for call-center representatives, including Freelancer.com and SimplyHired.com. Meanwhile, you should check local job listings for openings and opportunities as well.
Recycle items at the local recycling center if they accept collections. Many recycling sites will pay a small fee per pound of recyclable items. Go around your neighborhood collecting things like glass bottles, soda cans, newspapers, cereal boxes, and milk jugs. Have your parents drive you to the nearest recycling center and turn in your haul in exchange for money.
Wash cars or bikes if you have a big enough driveway. Gather some sponges or old rags, towels, car washing liquid, a big bucket, and a hose and set up a washing station in your driveway for a few hours on the weekend. Scrub each vehicle, focusing on any dirty spots, rinse it thoroughly, and buff it dry with a microfiber towel. Charge $10 to $20 per vehicle.