The second of a series of tribute fics, with the first being the Avocado Christmas special.
Circuit the cyborg fluffy is by Black-Dragon-Blood, and her story can be read here. Crush, Patchy and Drool all belong to Coalheart, and are part of his hugbox series known as the Fluffy Shelter for the Abused.
The story was written to be independent, but those in the know can also see it as a continuation from a plot element in Part 9 of the Sam Adams Guide.
The story is also on the subreddit, and may get updated in future.