I was tempted with a VCR type case originally, to be exact I have an old Technics graphic equaliser unit, of the same dimensions as a VCR.
What put me off was building the new fascia. I was convinced I'd make a hash of it. :-(
However, a fleuro-LED display in neon blue would look so kewl...
http://www.mini-itx.com have some interesting case ideas, and while not exactly useful, can provide some inspiration.
-Jar.