The oldest mouse I've used was an optical mouse, which required a special optical mouse mat. It came with an SGI Iris Workstation.

Edit: added link to a page describing the glorious Iris 3000 for your viewing pleasure. Starting that thing felt like a Tupolev was taking off next to your desk. It was quite something. I saved one that was getting chucked, and found a place for it in the local national tech museum.