Write a scene that is somewhat plain that you could put multiple different characters into, and then do just that. After you have your scene, rewrite it several times with a different protagonist each time (try to vary personalities to spice things up) and see how the story changes based on the main point of view. For an interesting twist, make the different characters in the different scenes be characters from stories that you have written! Have fun and don't forget to tag me in the comments @QuietSilence.