If you ever need to make a rope ladder, the March 1959 issue of Boys’ Life magazine shows you exactly how to do it. This design has two great advantages. First of all, no steps are required, since the rope itself is used. And once you’re done with the ladder, you can easily undo it and have your rope back in its full length.

An even number of steps ensures that you have an even number of ends of the rope when you’re finished.