Here is a smart pillow that lets you know when you should turn around to avoid sunburn. The Tanny lets you get tanned in a healthy fashion. You just have to twist it on and set a skin type before getting started. The pillow apparently has a cooling fan and alerts you when your time in the sun is up. The below video should give you a better idea how Tanny works:
We would love to know even more about how this pillow works. For now, you may want to check Dominik Merle‘s page to learn more about this and other exciting projects.