I just ordered one of these for the kids. My plan is to have it inside when the weather is yucky and take it outside on nice days.
It can be drapped with sheets, etc. and the kids can pretend it's anything....store, cave, bed, castle, puppet stage, restaurant, etc. You can get a canopy to increase the height and can be used as one structure or 2.
I think it'll be great for inside play!
http://www.threesisterstoys.com/p-67...-colorado.aspx