We recently moved into a house and I have had a lot of fun letting the kids explore their creative side with what they wanted in their rooms and creating some of it with vinyl.  Here is my little girls room.  When we moved in this room had one bright orange wall, two light blue walls, and a green wall.  After a couple of coats of pink paint we ended up with a very cutesy girly room!  My oldest girl is a huge polka dot fan ever since the Hannah Montana movie.