If you are fascinated by this sort of thing, In US architectural practice, Architectural Graphic Standard has been the standard for the sizes of things for nearly a century. Even the old "Student Edition" is a rabbit hole book.

https://www.wiley.com/en-us/Architectural+Graphic+Standards%...

From the name, I thought it was going to be about fractal dimensions[1] (:

So on that tangent ... you can measure that value for ordinary objects using the "box counting" method[2], to get a notion of objects being "1.3 D" and such.

[1]https://en.wikipedia.org/wiki/Fractal_dimension

[2]https://pages.cs.wisc.edu/~ergreen/honors_thesis/dimension.h...

I can not make out how those things were chosen. A lot of Ikea furniture, a random selection of bollards, Dolly Parton, and a Yellow-Spotted Millipede.

They must be at least partly automatically generated. Lots of IKEA items because their dimensions are easy to scrape from the website?

Please take (some) of my money, what a beautiful site.

The color design is intriguing, works so well for this kind of catalog type site.

It looks cute, but very hard to read, bright monochrome color.