My daughters share a room, it is rather large, like master bedroom large. But this can work for smaller rooms as well as a toy or bonus room.
Anyhow, I bought a vinyl picket fence and made a stuffed animal pen. I purchased a premade panel of picket fence about 3 ft tall by 6 feet wide or so (Home Depot or Lowe's), a corner post and the brackets. I then cut 2 or so feet off the panel, had that come away from the wall towards the middle of the room, attached the corner post, then put the remaining panel running the direction of the wall. I put this pen against a corner, so that the wall made up the other short end.
I hope what I am saying makes sense, my camera is on the fritz or I would post a pic.
I then painted very tall flowers/green grass/srubbery on the wall to make it look like an outdoor garden/zoo scene. I am by no means an artist. By no means.
My girls have around a hundred stuffed animals. This holds all of them!!!!!!! Plus they are able to get most of the animals such as the webkinz out through the slats of the fence, I do not have to worry about them having to stretch and bend over or fall in the pen and not be able to get out. I did have a friend copy me on this project, her dh put a working gate on one end.
It was a little costly (I think around $50 ish??) but oh so worth it.