These cups were from oriental trading. We cracked the sides of the cups with a hammer because they can't be cracked with your hands about 30 minutes before the party. Sharpies were available for the kids to write their names on their cups before they were filled so it would dry. They didn't have any problems keeping up with their cups!
Fiber Optic Centerpieces (program colors ) battery operated $4.99 each / 10 for $4 each Save-on-crafts.com I probably wouldn't use as a centerpiece, but rather through the room. It reminds me of coral or sea urchins. They would be very pretty in a dark room. (Mrs. B)