I have been playing with a pre-made housing for remote flashes. It is intended for security cameras. It's weatherproof, has a two 1/4"-20 female holes on the bottom and two glands on the rear. The top and bottom are made of aluminum and the front and back are plastic. To hold the flash in I use a velcro strip. Since the whole top opens, it is easy to get at the flash to change batteries or adjust settings.














They are available on aliexpress. https://www.aliexpress.com/item/CCTV...76ba4c4dIGIxlc