The first four chapters of my MLP fanfiction are now online on fimfiction.net. Unlike Friendship Is Optimal (fim link), which focuses on how MLP might impact the trajectory of AI, or Myou've Gotta be Kidding Me (fim link), which focuses on how a rationalist might impact the trajectory of Equestria, I wanted to ask: what would the MLP Way look like? How would MLP impact rationality, and what would rationalist MLP look like?
This has been over a year in the making, off and on, and I've received significant help in writing it. In particular, I'd like to thank the pre-readers and editors who have helped polish it, and everyone who's shown interest; that has been a great help in motivating me to work on this rather than other projects.
There's much more to come; I should be able to maintain at least a chapter a week for the medium term, and hope to post more frequently than that. If you're interested in pre-reading / editing chapters to come, let me know!
Like gwern points out, you can actually make leather out of human skin too; it's rarely done for obvious reasons. Either Equestria hasn't advanced in subpony rights enough that most ponies are squicked by the thought of leather, or the skins are voluntarily donated.
(I am considering changing it because some people are squicked by the thought of leather, and it's not clear the story improves enough from there being leather in Equestria to justify that.)
You could fluff it as "really good fake leather that is actually made from plants," maybe?