I've modified a Macintosh IIci case to house a Micro ATX PC. A lot of plastic had to be removed to make everything fit. The floppy slot has been widened to serve as a CD-ROM slot with a full-sized slot-loading 24x CD-ROM drive. I even themed the Linux OS with something Mac OS9-ish. I would have gone for something more like classic Mac OS, but I had already started working on this one. I'm quite proud of this one, but sadly it has to be disassembled for parts. At least I got some good photos of it first. Hopefully I'll be able to rebuild it some day.
I've included some photos. Screenshots will be in the next post.