Over the last few days I've featured a couple of free tools for adding interactive elements to your videos. In the last year I've reviewed a few other services and methods for doing the same thing. This is a round-up of the ways that you can add interactive elements to your videos. The first four tools could be used by students to create a series of choose your own adventure videos. These tools could be used by teachers to enhance the short videos that they create for flipped lessons.