Dig the possibility of a built in ball or water toy. Thinking that a peg-board or similar on the wall (outside, inside, both) would give us some flexibility here. I just realized this is a cat play house, but the one
Handmade Modern: A Lofted Bed You Can't Find In Store - What a great way to save space with multiple use functions. All kids love bunkbeds. My child has a full size bed and complete bedroom suite and would rather have this, haha!