We had a Kangaroo Climber in one of the kids bedroom. They loved it! Never wore it out either, they just got too big for it.
We got it online at Sears and they delivered it to the store the next week or so. I imagine it's too late now to do the online way so try Toys R us or a larger store that has Step 2 or Little Tykes stuff on hand.
In child care we're required to have indoor toys. We have to have a 2 step slide, riding toys like a rocking horse or some modified version of it, and more, like larger trucks they can scoot on.
Here's a similar toy to what we had, it was an 11.5 bedroom. We had a twin size bed, a 9 drawer chest of drawers, and a couple of book shelves and it fit just fine.
This is similar to what we had. It was so much fun for the kiddos.
http://www.toysrus.com/buy/outdoor-play-climbers/step2-ka...#