Write a scene in which one character has lost his/ her memory. One or more characters tries to help by showing them an object that has some significance or reminding them of a particular event. Does it work? 

For example, if you’re a DW writer,  the companion might find a memento of a previous adventure ( I’m thinking of Eight) . Or for Once Upon a Time, there’s the chipped teacup ( … no context due to spoilers)