I will be attempting to modify the drop boxes on my ammo belt so although they look canon on the outside, the plan is to use them for storage on the inside...not a lot of storage I know but should be enough for ID, credit cards, cash, even a cell phone if it's small enough (as long as it's turned off or silenced)...there aren't many empty pockets in stormtrooper armor but there is the thermal detonator and drop boxes to consider for storing things..
There is a gentlemen (his name is Keith...kwdesigns2@verizon.net) who makes inner drop boxes for AP style armor...so with an inner and an outer I'm sure a creative person can construct something with these drop boxes to be a rudimentary storage device to hold what are essentials for some folk.
There are a lot of creative people on this site which is important so challenges such as this can be worked out.....if I can create a drop box storage device I'll post my solution for all to benefit from...it could be a little while though with the year winding up there is so little time.....