Logitech Performance Mouse MX for my laptop. For some reason I have always thought it was a small laptop mouse, but it is regular size. Its still very nice though, up there with the classic MX518.
Tiny reciver, too bad the mouse isn't BT. As it is so small it doesn't really bother me.
And I got this. Please dont think I am a hipster.
I am drawn to the mechanical workings of these machines.
I actually enjoy servicing these when I get them. However, this one worked almost flawlessly when I got it.
IBM Correcting Selectric. It has a electric motor which drives the typewriter but it is actually fully mechanical (the motor only delivers the power for the mechanics to work).
It weights a hefty 19KG, the shipping costs were more than what I paid for the machine.
It uses type balls which can be replaced (different fonts and sizes, they have 96 characters). The mechanics to make the type balls to rotate and pitch are very advanced.
Slowmotion of the movement:
http://www.youtube.com/watch?v=W1nqvScy-RA&feature=player_detailpage#t=13s