Using stickers or cut-paper and washi tape is a great way to add color to any wall. In this Australian home in the countryside, homeowners stuck circles cut from a rainbow of colored paper to the walls in a random polka-dot pattern in the kids' room. It's less of a commitment than paint, making for a great temporary solution to add excitement. And the best part? Removing it is as easy as a 5-minute session with a step-stool, leaving no wall damage.