I was watching an episode of Get it Sold on HGTV today and they were doing a lot of quick fixes to get a home ready to sell. This show is great for cheap, easy ideas to pull your home together in no time. One thing they did was this:
1) Painted some canvases
2) Let them dry
3) Taped them off with painters tape
4) Painted them a second color
5) Pulled off the painters tape to reveal their new wall art!
Awesome and easy! I couldn't find a picture of what they did online, but here's my attempt: