Anyone who has tried to soothe a crying baby who just can’t be soothed will wish they had had a Mamaroo Bouncer when they needed it. The Mamaroo Bouncer rocks and bounces it self; you can use it to simulate motions of a car ride, kangaroo, tree swing, rock-a-bye, or ocean. You can also have it recline for naps or sit up for interaction. It has built-in nature sounds, or you can plug in your MP3 player to lull junior to sleep. It has an LCD control screen, a toy bar with balls that can be removed for play, and comes with an AC adapter. This looks much more effective than the battery-powered bouncer device I gave my sister-in-law to add to her colicky son’s bouncy seat years ago. The Mamaroo Bouncer is $219.99 from ThinkGeek.