Paint is probably one of the cheapest ways to decorate a room. And one of the easiest! But if you really want to make a BOLD statement you could try this.
Best of all, it's really simple to do. All you need is:
2 different paints
various sizes of painters tape
Now, I won't bore you with a before picture (maybe I don't really have one.) So I'll just jump in. Once you have the wall painted with your first base color I taped a frame around the wall with a 2" tape. Then just go to town putting tape on the walls, there's no rhyme or reason to it. It is a good idea though to look along the tape to make sure it doesn't curve so you have nice straight lines. Make sure to step back every few lines of tape to visually keep it balanced. That way you don't have one section that has a lot of lines and another that is pretty bare.
The best thing about painting a design like this is how easy it will be to cover it up when we're ready for a different look.
Do you have an interesting pattern you've achieved with tape? I'd love to see what you've done.