He loves spongebob, so we have that covered, but I was trying to think of something that could possibly help strengthen his one hand, but could also be cool (He loves to be cool

) or could occupy his time. Prior to this he was able to live in a group home and work part time in a bakery, to give you an idea of his abilities.
I realize that this is a rather specific question, but internet search has been no help and I'm on this site all the time anyways...Thanks in advance