The mamaRoo sleep bassinet looks simple at first glance -- and then it starts moving. The base stays still while the basket itself glides up and down, side to side, in smooth, dreamy motions. There are five different patterns: car ride, kangaroo, tree swing, rockaby and wave. Each of these movements has five speeds, offering 25 total settings. And each one is based on the natural motions that parents make when they're trying to soothe their little ones.