DIY Modge Podge - fill jar half way up with white glue, then fill jar up with water. This is a mixture glue/water. It will have a Matte finish. If you would like a Glossy finish, add 1 TBS of clear varnish. Note: may yellow over time.
This homemade clay recipe only takes two ingredients if you count the water) and 10 minutes! Oh, and it is so much cheaper than the store bought model magic! Modeling Clay Recipe 2 Cups of Baking Soda 1 Cup of Corn Starch Cups of Cold Water