Make a wipe-off weekly menu board in your room with a picture frame and your favorite scrapbook paper. To change the look for the season or to match your new room decor, simply just change the scrapbook paper.
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)