here's an interesting article about a guy wanting to create art in his bathroom using coloured tiles - basically a mosaic but using conventional bathroom tiles. Personally I think the final result was a wasted opportunity but each to his own. I always wanted to create my own Gaudi-esque bathroom with the walls covered in broken tiles, pots and pieces of mirror and maybe even some organic lumps and bumps in plaster to hide all the straight edges of the fittings (probably not a lizard though). One day maybe...