For the spiders, a small amount of polymer clay is all you need. To make the spiders, roll 2 small balls for the body. Then a long snake like piece and cut out the legs. Bake on wax paper at 275 for a few minutes. If you don’t want to make your own spiders, you can buy flat back buttons. With cloud slime, the spider add-ons will not stick very well, but they are great for imaginative play! Polymore clay is perfect for making your own slime charms! :)