Make easily with Salt Dough - 2 cups flour, 1 cup salt, cold water. Mix until has consistency of play dough. bake at 250 for 2 hours, then cool and paint. Good recipe for thumbprint pendants. really want to do this with the babys fingerprint.
Bake marbles at 325-350 degrees for 20 minutes (for more cracking-look, bake at 500 degrees for 30 minutes). Remove and carefully drop into pan with ice and water. Glue end caps to finished marble (w/starter rings) to create bracelets, earrings, pendants, ornaments...(unique and great gift idea)