Well, I could add something like this* or this to my Clara and Me porn stars story, since I already have them using some cracky (but inspired by real) sex toys already in the story. I probably wouldn't go in the direction of something from a fictional tentacled creature that has one of its tentacles cut off or something. Let me think about it.

*For those opposed to Bad Dragon because of the owners, I'm using the link as an example and not an endorsement of Bad Dragon.