Like my Tap Holder, I created this to put inside an inexpensive belt pouch to hold sockets, extensions, other tools upright and to protect the pouch from the metal tools.
The tools will rattle, but that's partly a result of the holder needing to be loose for quick access to remove and replace the tools without having to look.
This is very thin, but given my usage, it is plenty strong.
I made this to fit this pouch, and it should work in either pocket. https://www.amazon.com/gp/product/B09WHRXJR7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
The author marked this model as their own original creation.