Materials: Hair gel, plastic sandwich bags, glitter or small jewels, duct tape
Squeeze hair gel into a plastic bag.
Add glitter or jewels.
Take air out of the bag, fold over the edge, & tape it closed.
Put the bag into another bag & tape it closed again.
Sandwich bags make a nice size for individual squishy fun, but if you want a slightly different experience, you can use gallon sized bags and tape them down to the table or floor along all of the edges.