I previously created a version for the 20100 so this is a new and improved version of that.
This one however was made for the much larger Anker Powercore+ 26800
...Zeig mehr PD battery. It holds two cord of decent size. I use it for the Anker USB-C charge cable and Apple's USB-C to Lightning for fast charging my iPhone XS Max.
I printed it in TPU but I am sure it would work just fine in most other materials. Might need to scale it +/- 1% for others.