In cast interviews, I remember a montage of everyone saying "pockets". The uniforms don't have them.
On away missions, I think Crusher put her tricorder "away" on occasion, and other than someone who will be operating a single instrument for the duration (so no need to put it down), personnel will general have several items, such as the ubiquitous tricorder, some geology tools, local currency if applicable, collected samples; not to mention tissues, water, and snacks. Flashlights were in-hand if exploring a cave, but where were they stowed otherwise?
In addition, the com badges might actually be general purpose machines (or at least act as a thin terminal to a computer brought down with the group), they don't have displays like my smartphone.
In-universe, they don't need ID and paperwork other than their badges... but if on a civilized non-federation world or nation therof, maybe they do need to carry ID and permits.
I seem to recall phasers having a belt holster of some kind but it's not conspicuous enough that I remember any fashion about it.
So, are there any recolections or screen grabs of packs, messenger bags, utility belts, etc.? At ComicCon fanexpo (Dallas), I want to prepare something that is practical for actual use, has canon precedent (preferred), or at least looks like it belongs.
My current idea is to use a modular belt system as sold for photograpy.
There is some overlap between the "camera bag" kit at military kit, with some kind of standard velcro mounting from the latter making inroads in the former. But light-duity and black nylon is typical of camera belt-bags, and I can use stuff with more conventional outings as well, justifying more budget.
Some kind of mods to make it look more in-universe, and changing the branding into livery...?
(I do in fact want to carry a good camera, so need pack space for that)
Or is there some other type of satchel, messenger bag, or whatnot that is a better idea?