Simon Willison’s Weblog

Holotypic Occlupanid Research Group (via) I just learned about this delightful piece of internet culture via Leven Parker on TikTok.

Occlupanids are the small plastic square clips used to seal plastic bags containing bread.

For thirty years (since 1994) John Daniel has maintained this website that catalogs them and serves as the basis of a wide ranging community of occlupanologists who study and collect these plastic bread clips.

There's an active subreddit, r/occlupanids, but the real treat is the meticulously crafted taxonomy with dozens of species split across 19 families, all in the class Occlupanida:

Class Occlupanida (Occlu=to close, pan= bread) are placed under the Kingdom Microsynthera, of the Phylum Plasticae. Occlupanids share phylum Plasticae with “45” record holders, plastic juice caps, and other often ignored small plastic objects.

If you want to classify your own occlupanid there's even a handy ID guide, which starts with the shape of the "oral groove" in the clip.

Or if you want to dive deep down a rabbit hole, this YouTube video by CHUPPL starts with Occlupanids and then explores their inventor Floyd Paxton's involvement with the John Birch Society and eventually Yamashita's gold.