Now this case mod is definitly different and a bit odd. 
An old vacuum cleaner. Its an Intel Celeron 400 with 256MB SDRAM and 2x25GB IBM harddisks.

I found this at http://www.xtremods.com/vbulletin/showthread.php?s=a88f1300ba20292ef9180d614012e629&threadid=34