Have slice and bake style cookies prepared for decorating after dinner.
Allow each child to have their own icings and sprinkles.
Use food coloring to tint vanilla frostings.
Provide each child their own tray to work on (this will minimize the mess).
Give each child a frosting container & sprinkle container, some children tend to overdue and this reminds them they only have so much to work with.
Have separate storage containers for each child so if they decide to give cookies away as gifts they are giving cookies they made (children take a great deal of pride in their own work).
Have several gift bags so the children can package up cookies to give as gifts.
These are their cookies, let them go crazy and enjoy this delicious
*Making Holiday Cookies doesn't have to be so overwhelming. Putt the focus on decorating each cookie and not on making cookies from scratch. The children will love the different colors they can make with the food coloring, the variety of sprinkles they have and having their own individual tray keeps the mess to a minimum. Preparing the cookies after having a wonderful family dinner means the children (and parents) will have full bellies and will be less likely to eat a bakers dozen.