We have lava lamps, anyway. ThinkGeek has a pair of Star Wars Motion Lamps that look like the hilts of light sabers. One looks like the hilt of Luke Skywalker’s ROTJ hilt with blue lava-like wax; the other looks like Darth Vader’s Empire hilt with red lava-like wax. Each is 18″ tall, with a 4 3/4″ diameter base. Because they get very hot and shouldn’t be used more than 10 hours at a time, they are not suitable for use as a nightlight. The lamps are available singly for $29.99 each; a pair of both is $49.99. You can purchase the Star Wars Motion Lamps at ThinkGeek.