From Star Trek: The Original Series comes… a glowing rock. It made an appearance in the episode titled “The Enemy Within” where Sulu fired a phaser at a rock to keep warm. The rock operates in two modes: Survival mode and Atmosphere mode. On Survival mode, the structure glows red like the stones did in the show when the phaser heats them. In the atmosphere, it can have a variety of colors. It also comes with a replica of the Phaser so you can control the mode. For dramatic effect, whenever the mode is changed by setting off the phaser remote, the phaser makes firing sounds like those heard onscreen. Every true geek needs the Star Trek TOS Phaser-Controlled Rock Mood Light.