We're smitten with this slide, puppet theater, lofted nook 3-in-1 play unit. It turns a corner of the bedroom into a fun zone.
The lofted area is a great place to lounge and read, or your kids can use it as a stage. Underneath the curtained hideaway makes a great puppet theater or fort. A ladder on one side and a slide on the other lets them burn off a little energy. We like the idea of using the space under the slide for storage. Also the puppet theater is great for storing baskets of toys when not in use. If you've got the space, consider installing something similar in your kids' room.