Over at Ikea Hacker, Jules posted one of the sweetest, most creative hacks I've ever seen! Pinot and Dita at Our Artful Life decorated their wall with paint and Ikea fabrics.
So adorable. I am no painter, but I could really see this done on a wall with any kind of fabric to match your decor, and it wouldn't be at all child-like. Especially that tree! I wish I could duplicate it! So pretty.