I played another MUD for ages that had backpacks, everyone was carrying one and if it got stolen you lost your ass on it.
Maybe there could be classifications from poor to rich, with pricing to follow like:
a garbage bag - 100c (holds a low amount of weight and breaks if you overload it) must be held - doesn't warn you if you overload it either
a grubby backpack - 1000c (holds a medium amount of weight, wont close if you overload it and stuff could fall out randomly) can be worn, must be closed to keep things from falling out
a large suitcase - 10,000c hold a decent amount of weight - must be held
a duffle bag - 15,000c holds a lot of stuff - can be worn on back or held
a SHI aero-bag - 50,000c holds a shitload of stuff and floats beside you cuz you're a corpie piece of shit who's too good to put things in a pocket like some mixer scum - can be locked with a code, but if open anyone can take from it as it's just floating there - could be hijacked by a good decker/cracker