You will need a fine Sharpie marker and the ability not to giggle while you draw this on their hand.
Yea, this should do it.
I would put one on both hands, just to keep them super busy and see if one hand can jump faster than the other. LOL
Grandma-ma loves you all.
p.s. I wonder how many daddies will put this on their hand too?
p.s. I wonder how many daddies will put this on their hand too?