Rube Goldberg's mouse
Channeling his creativity through his steampunk alter ego, Professor William C. Ravenscroft, Jake Hildebrandt built his first Bug mouse in his college dorm room with materials at hand. Made almost entirely of brass, the mouse's case has toilet-seat hinges for the buttons, a brass-plated corner plate from a steamer trunk for the wrist rest, and gears everywhere. Inside are the works from an ordinary USB optical mouse.
The original Bug weighed in at a whopping 1.6 lbs. -- not terribly practical to use, Hildebrandt admits -- which he has since whittled down to about 10-15 oz. (Each Bug he makes has somewhat different parts.)