A.P.
Last year, for my son's 2nd bday, I let the kids play for awhile, just like a playdate, then we had pizza. After that, I let them decorate their own cupcakes--they loved it!!! I got a few different colors of icing, plus a variety of "toppings" (sprinkles, mini m&ms, etc.) Each child decorated two--one to eat right away, and one to take home. They felt so grown-up decorating their own cakes. I might do the same thing again this year because it was such a hit. Good luck with whatever you do, and have fun!