This 'Before & After' project is great for a couple of reasons, featuring: a) temporary art that you can do with your kid; and b) a quick and cheap IKEA chair makeover. Check out what Katja did with her son to transform a simple little corner of a room.
Both of these are reversible at any time, making it perfect for renters or fickle people. It's actually pretty amazing how these two simple things make such an impact in that small space -- all for about $30.
Katja gives full instructions, along with photos of the process, over at her blog, Shift Ctrl ART
Thanks so much Katja -- both projects look great!