My little guy shakes his stuff toys wildly too.
All is fine till he let's go and swings into the direction of my face.
Snaps me out of where ever my mind was.
Mmmmmmm!!! come to think of it, how does he aim so well into my direction
When he gets tired of the stuff toy, he plays with our cat.
He runs like a maniac all around her then at some point he bounces himself off of her.
They started doing a new thing lately....standing up right and kinda boxing.
Don't worry everyone! This has been going on for a year. The cat never uses her claws. And they are the best of buddies. Sleep together etc.