I get bored, and I maybe go work out, or I find a book, or I hunt up random websites, or if desperate, I will do laundry.
You get bored, and it's probably similar, although you may trade out other activities for mine.
Evan Kuester gets bored, and he 3-D prints a hand.
As the story at the link notes, Kuester says ideally the hand would work like a regular one, responding to commands from the brain and grasping things and such, but his version doesn't. It's limited, he says, by technology. Not for long, I bet, if he's got any counterparts in the science and engineering fields.