Casper’s Glow lamp is a bedside lamp with a number of fun features. The lamp turns on when you invert it, and brightens or dims when you turn it on its axis. The lamp is removable from the base, and can be carried around like a lantern. The base recharges the lamp as well. There’s an app that lets you set a schedule for it, and sync several of them in your house if you want to.
video of a Casper glow light in action, from Casper’s site
If you’re curious what’s inside, here’s a great teardown of the light. Thanks to Arnab Chakravarty for the link.