I've had my eye on this storage tent for a long long time. I would love this in a playroom. Assuming I had one. You can get the cover only for $159. I always hesitate to buy things like this because I think I could easily make it, but realistically I never will.
Oh and here's another thing I refuse to buy because I can theoretically make it. It sits on your table so it can double as a playhouse. (I completely forgot where I saw this, sorry)