This is a nice one from synth-diy blog. A very cute housing of Catweazles Fraktal/CellularAutomata Synth. You can find more info about the project on this electro-music post. It had been housed in a cardboard shoebox (which I like) but he has since re-housed it in a plastic container from Ikea. I guess the shoebox just didn't work out.
Go to Synth-DIY blog for more pics, schematics, and a few mp3's. The thing is 8 bit and can sound animal enough. Running it through a full range PA would definitely annoy the neighbours :)