Slumber Stories are custom dice used to help tell a story. Originally designed for helping parents make bedtime stories for their kids, they could also be used to create story elements for an RPG as well.
And no, not everything has to be high fantasy or grimdark future to qualify as gaming news or usable in your games.
I could also see a gamer parent using them to help teach a gaming kid how to come up with their own stories for games and such. So just sayin’.
From the campaign:
Slumber Stories are a fun and creative way to create a story. Just roll and make up a story with the pictures you rolled.