I made this remix to fit two inserts in the top and my powerbank in the bottom piece.

You can either fit two inserts next to each other in the top part or use the dual width one i made. The one i made allows for a sligthly longer cable since by fusing them, i was able to remove some of the wall that two next to each other would have and use that space for a bigger cable holder.

The bottom part is deeper than normal and is made to fit the powerbank i used.

https://www.amazon.de/gp/product/B0BJQ7F16T/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

The pegs in the powerbank insert are NOT meant to hold it in place, they are more like a guide for it to be centered. I use a piece of double sided tape to hold it in.

I also used these usb c - usb c 90 degree adapters to not have to take the powerbank out. Just put them in pointing up.

https://www.amazon.de/gp/product/B0BDZCMYZG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1