For the construction you will need 1/4 inch inch threaded inserts and a 20 mm wide hook and loop strip.
Akku Strip: https://amzn.to/3Oa6iMt
Inserts: https://cnckitchen.store/products/gewindeeinsatz-threaded-insert-1-4-20x12-7-kameragewinde-20-stk-pcs
The author marked this model as their own original creation.