Fake Ice - Make a square foil mold using a small block of wood. Fill with plastic jewelry beads and cook in the oven for about 20 minutes at 375 degrees. Monitor as the cubes bake. If the melting beads get lower than you want, throw some more in. Once melted pull from the oven and let cool. Depending on how well you made your mold, you might have to file some edges down.