Anyway, the gel drawing board is lots of fun and super simple to make. It's actually the only thing that I've ever made that Elliott has really, really liked! His brother also had fun drawing with it. The girls like it, too, but not nearly as much as the adults in our family!
To make the gel drawing board, I filled a gallon sized ziploc bag with hair gel, food coloring, and glitter. I cut a foam core board the same size as the ziploc bag. I taped the bag to the foam core board using zebra print duct tape.
I put a piece of clear contact on the back, so that it would work as a dry erase board.
This is a great activity for the car, and I'm planning to make some smaller ones in different colors for the girls to use in the car. Fun stuff!