Why lie? The best use of solar power we discovered this week was MIT’s solar powered oil clean up robot. Using the sun’s energy to clean up floating oil is definitely the coolest use of solar we’ve seen in a while. However, if you’re looking for a pointless gadget that runs on solar, here we have…solar coasters!

Just what you always wanted? Obviously. Everyone needs a glowing, colorful place to put their fancy cocktails. A watermelon margarita just wouldn’t look the same without one. Even better, these gadgets run on LED batteries that recharge in the sun. According to the Glow Company, which sells them, a solar coaster “Automatically senses daylight and lights up in the dark when a drink is placed on top.” Really, what more could you want?