Hmm..some ideas coming here...cool! Okay..I wanted something to carry around with me like a kind of "purse" or "tote". I have the toolboxes that my husband and I have our "not being used now..but maybe one of these days" stuff, and extra supplies. I wanted a bag to carry the basics of what I need for a day's vape ...I like to change out my PVs during the day. I only vape one juice so I get my kicks from vaping on different devices and changing up colors and stuff. I also like to have my tools (screwdriver, dental pick, syringe, carto punch, SYM, small scissors, etc...those don't "need" to be in separate pockets, just one that holds them all securely one way or another) and a box or two of cartos, some spare batteries, a couple of PVs and/or APVs, a bag of drip tips, maybe a USB passthrough cord and a charger ...you know...stuff that you need during an average day, but not the full stock of all the goods all in one place. Nothing "boxy"...more like a tote or purse or messenger bag or something like that I can carry...sometimes even in lieu of a purse if I'm going to be away all day, or overnight somewhere...
Edit: Oh yeah (I'm not asking for much) and of course pockets for most of each type of gizmo I'm toting around so they don't all bang together and damage things.
Look up "Messenger Bag", its kind of a purse, some have lots of small inner pockets and pen holders.