This has come up before, but I wanted to repost.
If you need a quick storage box, hanger, folder, etc., check out Boxes.py
Dozens of generators that you can customize. I make something from this site every few weeks.
Once it generates the art, you right click on the images and save as an SVG file. Dead simple.
Here’s the latest.
A box to hold pens, Post its, flashlights, etc, in my RV.
The other is a notebook cover to hold camping information. I’m gonna rivet in a 3 ring binder.
For living hinges, it’s not a bad idea to cut a test piece an inch or so tall. The algorithms are preloaded and I found that the hinge was too generous in the app.