My 7yo son would like a Lava Lamp for Christmas; he loves the way they move. I was all for it, but my husband says they aren't safe. I googled lava lamp safety and I heard about a story of a person dying because he tried to heat his lava lamp on the stove and it exploded. Mythbusters even confirmed that it was possible. So other than refraining from heating it on the stove - are there any other hazards to Lava Lamps? Does anyone know of a similar product that may be safer for a kid?