About today's writing prompt genre: Take the following story aspect and work it into a piece, whether poetry or prose, whether you explore what led up to this place in the story, it begins with the thread, or the thread is merely a tiny aspect of the story that has crystallized around the original image. However you choose to write it, use the following as a jumping off point.
Today's thread is...
First line. Use the following line as the first line of your piece.
Everybody dislikes spiders, but my sister was absolutely terrified of them—which is why we ended up here.
So there is a narrator and a sister, two characters to work with, the phobia of spiders as well as the acknowledgement that spiders are generally distasteful, and finally, the fact that their location has something to do with the phobia of spiders. Think of it like a maze entrance that you use narrative to escape from.