Heh, I still have that 4MHz IBM... now that is history!
Also a Palmtop (Man, those things are neat)
Windows 3.0 disks
Boot Floppy
Leading Edge Laptop (With ducttape, so its not much of a display)
You could check some websites and see if they are willing to give you a special license to display their images (Just keep track of the licenses, and also offer to link back to their site, that will usually bribe a webmaster enough, lol)