There was a post earlier about the NEMA 1-15 plug that was, unfortunately, just spam. However, it’s kind of an interesting topic, and better yet made me remember this delightfully old-school website: The Digital Museum of Plugs and Sockets. The history and overview sections for plug standards in different parts of the world are genuinely interesting, and the site as a whole is impressively comprehensive and is a well constructed HTML website (I don’t know how it looks on mobile but on desktop it’s a very clean looking site)