Tired of accidentally knocking your bedside lamp to the ground in the middle of the night? Not only is that incredibly difficult with this heavy concrete O-Lite lamp, it also means the odds of it breaking as it hits the floor are slim to none.

Instead of a pesky cord, the lamp is powered by a single nine-volt battery which will keep its LED bulb glowing for up to 20 hours. So unless you've got an unending supply of batteries, it's probably not a good idea to use the O-Lite as a night light. And since it's so heavy, taking it on camping trips is out of the question too. But if you're looking for a bedside accessory that could survive a nuclear blast, you won't find a better value for your $20. [Etsy via Technabob]