What about a Gingerbread house? It's decoration, but also food. Would they allow them to buy it?
A new skill for baggers and shopping cart collectors. But an employee following an unjabbed customer around increases the chances of transmission.
As to the gingerbread house (or toilet paper, light bulbs, and dishwashing soap, etc.), is the employee going to remove it from the customer’s cart? Arbitrary idiocy.