Corkboards (bulletin boards, message boards) are so helpful! And you can buy round corkboard material at the garden store for about .99 cents! They're used as "coasters" for potted plants. You can buy an assortment to tack onto your kid’s room wall. They can be spray painted in your color of choice, and then you can carefully make a pattern on the wall, like we did in this room.
No matter how big or how small the space is, you can buy just what you need, and then pop more color in your child’s room. Use a sticky wall adhesive or just a small nail to attach. Fun and practical!