If you're in a big city, check out TaskRabbit.com to find odd jobs that can help you to earn extra cash.
How to Put Extra Cash in Your Pocket in 2013
Delicious Reddit

JANUARY 04, 2013
Sharon Epperson, CNBC

The start of the New Year is a great time to take the future of your financial situation into your own hands.
1. Cash in gift cards. At CardPool.com, you can get up to 92 percent of the card's value - and you don't have to pay a fee.
2. Hold a virtual garage sale. Post your listings for furniture or whatever you'd like to sell online or on a smartphone mobile app like Geoli.st. Essentially a CraigsList for your mobile phone, Geoli.st. is a free app that offers virtual classified ads on the best deals near your location.
Read more: CNBC