C.Y.
okay not sure about the bakery section but i can tackle activity ideas.
-crafty stuff--little kids love to make crafts and it doesn't have to be super messy or complicated at all...how about name tags they can color shaped like cupcakes--maybe use card stock and hole punch to string around their necks...crowns with cupcakes on the front would work too--just find a cupcake shape let them color/cut it out (u or them or even pre-cut works better) then staple it to the front of a strip of card stock or poster board.
--decorating cupcakes...u can put all the goodies in the little compartments of a cupcake pan
--for your favors you can put cute little goodies/candies/fruit snacks whatever in cupcake liners then wrap in some cellophane and tie it up with a little curly ribbon
--pin the cherry on a cupcake game--make a cupcake shape on a poster board and use some tape on the back of a cherry shape
i could come up with these all day...have taught pre-k for more than 10 yrs...so if these don't suit u let me know...i can feed u more...good luck