I have been trying for a couple days to create a list in Etsy's Treasury. Success! Here it is:
I chose the theme of robots because 1) they are awesome, and 2) K is, as he informs me, one of them. The button on his knee makes him walk, the switch on his nose makes him beep like a car, and poking his belly button causes a glitch in the system and then is has to be reset.