Lofted beds with walk-in closet underneath. Good when you're short on bedrooms for all of the kids. Loft beds and instead of a closet underneath, it could be the kids "rooms" for private and quiet time.
A slide in Maison Martin Margiela, Sanlitun Beijing! I want one in my dream house - maybe from the front porch to the bus stop for my kids (and for mommy when she goes to pick them up ; This looks like so much fun!