Ok I was planning on giving it to the kids to take which is what I did with the cake for the football. Like your sitch, the fight over the cake caused lots of laughter and the shared story after was pretty funny from both of them.
Couple of thoughts; I won't email the idea because I know he will say no thanks, you've got enough to do. I won't have any expectations of thanks because I won't get any, especially sending it via the kids.