I found these today!
If one doesn't mind the cluttered look, they are ideal for the wasted space of nooks and crannies in a toy room. I bought two others not pictured, and I've significantly increased my expansion space without seriously diminishing my other spaces! Gonna hit up the other Ross and see if there are any more!
recommend action figure stands. The shelves are reasonably stable but everyone would come a-tumblin' down if you bumped one and your display was sans stands.
My Star Wars Force Unleashed mini-display:
ESB Bespin Duel and Expanded Universe in the background: