I was looking for the dimensions of different sports balls for a trivia question[0] and found this website that contains renderings, dimensions, 3d models, and even just general wikipedia-like information on a ton of various objects. I love random sites like this that contain very specific information (like
https://www.thistothat.com/ that tells you how to glue two materials together), but was particularly interested in how well-designed and polished this one was visually.
No affiliation (just now noticed there's paid tiers, I just used it for free for dimensions), just thought this was cool.
[0]: https://playdisorderly.com/puzzle/4z3W7e/ - Mentioned trivia question (disclaimer: my site)