Each and every snowdome presents an irresistable temptation: to upend it and watch the tiny snowstorm coat its little world in white. There's nothing to lose, so why not give in to the urge? More than mere baubles, snowdomes tell the tale of our recent past. They show holiday trends, from mountains to the seaside. They also act as mini memorials to movie stars and important historic events. All but forgotten in the 1980's, snowdomes have made a comeback with a new generation of avid collectors. Helped by advances in production technology, the snowdome universe is at a lively peak, with novel models popping up all over the place.