Yeah, tried to think of a "referencing" title that wouldn't be too obvious, haha
Hmmm...I'm not sure what that thing on CATS hand is called...it's like a robotic hand with a red jewel above it...were you wearing a plastic replica of that? yep!
So with that, you are on your way to
*** SPOILER *** (ok, I'll stop now)
I'm making a cosplay of CATS from Zero Wing (the "All your base" guy). His left hand is partially robotic and I was making a metal plate (out of worbla, a thermoplastic popular with cosplayers for armor, props ect.) going over the top of my hand and wrist. I then realized... I wouldn't be able to wear my watch, which is usually on my left wrist, along with that, so I'd have to wear it on my right arm instead.