Life as I See It that includes a post about a $20 challenge between her and her husband. In summary they both have $20 that they can use to grow and make money throughout one year (they can also sell things). At the end of the year they will see who has made the most money. I think this is such a fabulous way to force yourself to think outside of the box! I have kind of gotten into a rut with just focusing on saving and not thinking so much about creative ways to grow my money.
I plan on taking this challenge starting in the summer to help push me a bit(possibly hitting up some garage sales!). Go to her blog to join in on the fun!