It looks quite simple: a wooden "volcano" with a core of "lava" inside. All you have to do is set the volcano down on a flat surface and get the lava out of it—without moving or touching the volcano. There's a trick to it, of course, but it requires lateral thinking and a bit of inspiration. And once you've gotten the "a-ha!" solution, the fun comes in seeing how long it takes your friends to get it. This petite yet intriguing-looking object, for puzzlers 6 and up, is made from painted and clear-finished hardwood and presented in a colorful gift box with illustrations of Professor Sense Sizzler, who promises that once you solve this brainteaser, "you will lava it!" (Not recommended for children under 3.)