[sbergot]

I have written such a website for a hobby group : https://ludistesorigamistes.camillebetsimonb.fr/

Sadly it is in french, but it has formula to design origami custom inlays. There is a whole community about this niche topic.

[rtpg]

Great site! Would be cool to have just a couple pics per block to show what kind of boxes you end up with.