This is the Heng Balance Lamp created by Chinese designer Li Zan Wen. They're an already funded Kickstarter campaign, available in a variety of shapes and finishes, and cost around $44. They're turned on and off by the attraction of the two magnetic balls. When the lower ball is pulled towards the top one it activates the light's switch. Why didn't I think of that? "Because you're not that smart." True. Plus I'm not in the lamp designing business. I've only invented one lamp in my life, and it's a gigantic burning ball of gases some 864,938 miles in diameter. "You're saying you invented the sun." Correct. What the bible doesn't tell you is that God actually took a little catnap on the fourth day and left me in charge. I also took that time to invent aliens and UFOs.
Keep going for a couple photos of shape and color options and their Kickstarter video.
Thanks to Allyson S, who informed me magnetic balls are the future. *eyes garage full of plastic ball-pit balls I invested my life savings in* Dammit.