I too, once had a grand scheme of making a furry cabinet. My plan was to use a shag carpet or something similar.
It was to be black whith a large smiley face in the usual sideart position as big as I could fit it. Finding bright yellow shag carpet turned out to be a bit tricky and I eventually gave up and moved on to other ideas. Probably a good idea too since it would raise the cost of a cab significantly for an effect that I wasn't quite sure would be all that great in the first place.