This mod's been around the block, http://bounav.free.fr/mods/vintage_mighty_mouse/

but still inspiring. I like that he kept all of the original parts intact, including the ADB connector. Either way, all of these are much nicer than this rather unattractive hack: http://www.command-tab.com/images/hacks/usb_adb/finished_bottom.jpg

I intend to do a wireless mouse in an original M0100 mouse case one of these days, to match a companion M0110 wireless Keyboard mod ... as soon as the prices come way down.