Just recently responded to a similar thread with the following:
I've tried camera bags, plastic containers and a laptop bag at different times with mixed results. For a mobile carry case, I've settled on the following for now..... A "Vaultz Locking Medicine Case" from WallyWorld. Protective hard outer case. Packs quite a lot of stuff. Easily holds five or six mods plus plenty of juice bottles and batteries. At less than $10, ya can't beat the price! And it even has a real lock.
I do leather carving and tooling so I'm thinking I might hand tool a leather cover for my case! LOL Maybe something like one of my motorcycle bags.....
For storing all of my gear, juices, tools, atomizers, Kanthal, etc., I use a basic Flambeau 3-Tray Tackle Box from WallyWorld as well. For around $12 it will handle most of my storage needs for the foreseeable future.
