The Bentley of bassinets, the Snoo Smart Sleeper mimics the motion of the womb to help your child catch some Zzzs. It’s so confident of its efficacy, it claims you’ll get an extra of hour of sleep (for yourself) per night. Widely respected pediatrician and educator Dr. Harvey Karp founded the company, and his product has become famous among celebrities, including Mila Kunis and Ashton Kutcher. Of course, with those endorsements comes a hefty price tag, but the company also has a rental program, which makes it more affordable — and temporary — for your child’s first six months.