I bought this mini tackle box at Walmart today for $5. I have 5mg and 10mg bottles in there. I think I could fit four 10mg bottles in each little square slot. The only thing is, this storage box comes with only 11 movable separators, and I needed more than that. So I bought two boxes.
I use this case for my Pro Smoke mini e-cig and I throw my cartridges in there when I'm done with them (i.e. "Unclean Parts") then wash them later and stick them in the "Wet Parts".
For the legend on the top flap, I simply took a pic of the contents, inserted the pic into Microsoft Word, and then 'drew' a table over the pic. If you would like that Word file, just PM me and I'll be happy to email that to you.