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.
Have a small spare room to transform into a huge walk-in. This makes so much sense for small closets. Turn the bedroom closet into the office by taking the doors off and setting a desk inside. use what room would have been the "Office" as a huge closet!
Hammock bed - this gave me an idea. wouldnt it be fun (if i was rich) to have a huge kids playroom with a built in indoor trampoline for the kids to jump! (kinda like where this hammock is- floor level- but tramp! I want this one day :)