This fun ladder in a kid's room can be used to reach high storage compartments while adding extra display area for toys and stuffed animals. I would just make sure you have an older, responsible child inhabiting this room because smaller kids can be accident prone, as we all know.
A Parsons Mini Desk works in a tighter space as a child's desk. Note that while the area of the surface has changed, the leg width and table thickness are still equal.
http://alacoladder.com/library-ladders.php