I've got rolls of labels that
won't stay stuck, LOL, so I cover them in sellotape which works fine for me (and I don't waste the labels as I bought them for that reason). On the TW bottles, I put them around the black edge of the dropper top, which also helps to see them at a glance from a distance as they're higher up than where labels normally are.
I also stick tiny little coloured round labels - which
do stick - somewhere where I can easily see them, usually either on or near the label. I use a different colour for each nic level, so that I can easily identify them, particularly the TW ones as their tiny little transparent labels are impossible to read, even from close up... Eg: green for 11mg, red for 18mg, blue for 24mg.
I do the same thing with the little coloured round labels for my carts (as I always only use one flavour per cart and atty so's not to mix up flavours), and mark each one with a letter or two to identify the flavour. It can be bit tricky placing them sometimes, depending on the size of the cart, and it can make the cart look a bit "multicoloured", but I'd be lost without them otherwise. They do eventually get smeared by the liquid, but are easy enough to replace.
I have rows and rows of bottles near me, as I tend to like to frequently change flavours and nic levels, and a bowl full of atties each with their own one cart attached to it. So I find the "colour coding" very helpful to me for making it easy to quickly grab the one I want. In fact, I even have different coloured e-cigs per nic level!
