While going through my collection of old U-matic videotapes I got from a school, I found a copy of this short film from the Japanese Ministry of Foreign Affairs:

1) Watching it myself, I think it's great for riffing. I love the shorts on the site and feel it'd fit right in with the rest.
2) It's an entire short dedicated to folding paper
3) a japanese kid in a tiny suit

Here's my copy of it, there's probably a better copy out there somewhere on 16mm film: https://youtu.be/FnYwpbhY8r4