I saw this before it was for sale, I had the same question !
Even a Sugar Skull, would need to be hand carved (no pattern).
or you wound have to chop the pattern up in many pieces to use...
I'm still Trying to Get them to do a Carve-able FootBall !
You would be able to add a Teams Logo, Or even your Kids Jersey Number on it !
Stoney - Has Idea's - LOL
Just a FYI - the Christmas Balls are SOLD OUT for the Year.
They will return Next year - and Possibly in Retail stores.