But if you'd prefer to buy one instead, there's an adorable mushroom lamp from IKEA that fits the bill. The IKEA NÖDMAST is a little cordless lamp that has a simple dome shade and cylindrical ...

There are currently four versions of these Ikea bulbs, ranging from a 400 lumen bulb designed for track lights to a 980 lumen bulb that will probably work in an American Edison lamp socket.