Make a rug loom with PVC pipe. Weave around top/bottom and sides of PVC to keep the weaving from pulling in. When done, just take apart the PVC and slip off the rug. What a great idea from Pink In Mind. Maybe with T-Shirt yarn?
(Hummm, neat idea, but uncertain on photos wrapping around the corner. The frames could meet up on the edge, but think the frames still might be best if they met in the corner but that each wall had its own photo frame.
[Handmade DIY homemade storage box tutorial] -- in Chinese, but the pictures are instructive, and the box model is easy to find in origami tutorials.- Not to mention would be great at holding loose jewelry laying around.