Custom Button Letter Wall Art - DIY - Kids' initials - hang on bedroom doors. Use a fabric that coordinates with each kid's room & tastes. Tips: SEW buttons to fabric, use decorative upholstery tacks on sides.
Buy a mirror. Put letter stickers on it. Paint over the whole thing. Peel off stickers. (use canvas instead of mirror. Paint canvas what color you want your letters to be first, then letter stickers, paint over, peel off)