NOTE for younger readers - This 'PS/2' refers to the old-style keyboard and mouse connectors before USB, and is nothing to do with Playstations :-)
I have a wireless Logitech keyboard and mouse with a receiver which connects into PS/2-style keyboard and mouse ports - the mini-DIN connectors which were used before USB became widespread (look for 'PS/2 port' on WIkipedia). I believe them to be fully-functional, but now have no easy way to test them.
There's also a basic wired mouse, also with a PS/2 connector.
If you're interested, please suggest when you could come and pick them up. I'll give them to the first responder. There's bound to be a rush for these! :-)Fair Offer Policy applies