Aaron Ristau showed off the Rotobotmouse a long time ago and he is now back with a follow-up to that retro looking steampunk mouse. The new Wireless Mouse Version 2 is similar to the original with a Steampunk look to it. The new mouse has a design that is a bit more plain but has the same typewriter keys on it.
You can choose what keys you want for your right and left mouse buttons. The new mouse has a Logitech M305 wireless mouse underneath the with the Logitech scroll wheel sticking through the cover of the mouse. The new mouse is larger and round with a silver dish that can also be painted. You can get a version with a ring around the outside.
I like the version with the spikes better though. The mouse underneath the cool cover is powered by an AA battery that can be changed by removing a few screws. The mouse is not cheap, it retails for $180 plus shipping if you want one. This would go perfect with a steampunk modded computer.