Glass marbles. The vase filler stuff. Choose any shape or size that you want, but make sure they have a flat back. ● Strong magnets. Make sure they are smaller than your marble. ● Silicone glue. I just use clear silicone from the hardware store, which you can find with the caulk and adhesives. You can also use E6000, which is sold at craft stores. ● An old paint brush. ● An X-Acto knife. ● Glitter!