Built for indoor slumber or stargazing outside, the Rocking Bed comes with a rubber stop that allows you to lock the bed in place or let it move freely. We'd advise using it on hilly terrain.

It's cheaper, clocking in at anywhere from $5,000-$40,000, and instead of just getting a bed, your little princess also gets a gorgeous playhouse and an indoor slide. 10. An Igloo of Books ...