Pavel 8 1/2" (scrap wood, typewriter arms, computer connectors, paper shredder blades, circuit board, various gears, etc.)
This guy is in rough condition but he is a rare find. Many of the Pavel series of maintenance robots corroded beyond repair within their first 10 years of service. Even this one may be missing a few parts as the exposed wires seem to reveal. Still, with a little creative reinforcement and some bondo, he would make a great display piece.