She picked out the supplies, dropped them off with me, and this is what I came up with.
I added a pacifier leash because we all know how easily they fall onto the dirty floors.
I added some little ribbon "taggies" to help amuse him.
A pocket for his sippy cup/bottle.
And slits for the belt to keep him properly secured in the cart.
Hopefully it will keep him happy and cozy during many shopping trips to come :)