2 natural sponges (found in the watercolor section of an art or craft supply store)
Plaster of Paris
Plastic or glass bowl, large enough to fit your sponge
2 copper pipe caps (1/2" diameter, available at Home Depot)
2 taper candles
Hot glue gun & glue sticks
Step 1: Use your exacto knife to dig a small hole in the center of the sponges so that the metal caps can be inserted.
Step 2: Hot glue the metal caps into the holes in the sponges (open side up, this is where your taper candles will go when the piece is finished).
Step 3: Mix enough plaster to completely submerge the sponge... about 2 cups plaster and 1 cup water, in the glass bowl. Mix with your fingers and squeeze out all the lumps until the mixture is smooth.
Step 4: Dip your sponge into the plaster until it is totally covered. Remove and place on a sheet of tin foil.
Step 5: Use your fingers to cover any bare spots with extra plaster. Repeat steps 3-5 with the second sponge.
Step 6: Let dry for about 24 hours, until the plaster is no longer moist & cool to the touch. Insert your taper candles, and light up any room in the house!