I painted the small wall near my front door with chalkboard paint awhile ago; it’s fun to be able to draw and write on a wall. It looked pretty stark at first, but once some chalk dust got rubbed in the color grayed a bit and faded to a nice look:
A friend posted pictures on her LiveJournal of her shower; she has used “bathtub crayons” to write on the tiles. I’m on the lookout for them as I’d like to try it.
There’s something appealing to me about doing art on walls, without actually “tagging” my home.