Had a problem remembering which flavour was in which tank, so i labelled each container. I just cut the tops off 30ml e liquid bottles with a stanley knife then trimmed them with a pair of scissors.
Rx bottles are also good for carrying large spare batteries (20700, 21700, etc) to avoid them shorting out in a pocket, purse, etc. Roll the battery up in a piece of paper towel if it moves around too much.IF you don't want to cut up perfectly good juice bottles, old prescription pill bottles work just as well. The pill bottles (if tall enough for the tank) have the added bonus of being able to slap the lid on and drop it in a pocket or purse for leak proof (the bottles with the plastic seal), and crack proof transportation. I came up with that for the wife who needed an easy way to carry a couple of tanks in her purse without fear of leaking or cracking the glass on the tank.
Rx bottles are also good for carrying large spare batteries (20700, 21700, etc) to avoid them shorting out in a pocket, purse, etc. Roll the battery up in a piece of paper towel if it moves around too much.
I also like to wrap a lot of coils at once when I get my build gear out. So I wrap 6 of this 10 of that, etc. Put them all in small pill bottles labeled with the wire type, etc.