I have also seen some 18650 cases with 4 slots, so 2 batteries and 2 bottles or whatever you.please!
Since I work in a B&M, I carry most of my tools and extra gear with me to work. I use a toolbox from Harbor Freight that I added dividers to, so my juice would stay upright. The pics are from when I first got the box, now it is getting pretty crowded lol! The 2 side sections up top are also removeable, so I need to set them up for a light carry grab and go type deal. Thinking cotton, small amount of wire, couple screwdrivers, coils for my tanks, and maybe a few other items. Maybe some tiny nail clippers to sub for my bigger wire cutters and cotton shears.