what if you took this idea inside with a slightly different design and had some form of "locking" from the inside that can be released by smoke detector from inside plus a manual saftey release even a child could release.
These would make an awesome staircase to an attic. I would love to see some Harry Potter books on there. This would also be cool with movie titles on it as well. I love this staircase--- more folks should do stuff like this.