[Lucid:]

The first robot/mech items I thought of off the top of my head were BORG, Kaimid's eye plate/mechanical hand, and the steampunk wings from both Victorian Vestments and Aeronautic Funk. I'm sure there are more, especially from more recent items, that I haven't used often and don't immediately come to mind. The only downside is that all of them are either DIs or old event items. The Tune Up common set has a giant wrench that will make you look literally like a mechanic, though! xD