Where these ankle straps are usually only used in the gym, they are also very handy for the person who also trains at home. What we often do with them is to put an elastic through the eyes and then attach it to a fixed point. This way you can do almost the same exercises without needing a complex pulley system.
In some cases I also use these on my wrists as an alternative when I am working with an elastic band for example and it starts to cut into my fingers.
