A swing set up in a basement playroom. Great in the winter! What I find disturbing is that the picture shows it attached to a cracked beam. However, without the immanent threat of the house collapsing, I want an indoor swing.
Great idea RE the twin mattresses. I also love the tree pictures on the wall! Love to display kid-made art in a kids room! Two twin mattresses, some plywood, and a great playroom that doubles as a guest room or sleepover room.