I have had play dates in the past with friends and their kids where we have baked. You would be amazed at how much fun kids have baking with you. It's a great learning adventure for them and a bonding time for you. It doesn't need to be perfect because all you need is some FUN! Another fun thing to bakes with kids is crayons. Yes, you read it right. Who ever thought you can bake crayons! I'm sure those of you with kids have broken pieces of crayons. And if not, get a box of crayons. They don't need to be anything fancy, just a cheap box of crayons. Start pealing them and break them into little pieces. Place them in a shaped cookie tray and bake in the oven at 275 until they melt completely. Remove, let them chill and the crayons will pop right out of the tray. Super fun and easy! This is the one time you'll tell your child to peel away the crayons and break them all they want :). Here are some pictures of the crayons we baked, and the sugar cookies we made from scratch for a play date.
Hope this will give you some idea's on how to be creative and fun with baking!