I use mostly boge cartomizers, have a few clearos too. I use a sharpie gold or silver permanent marker to write on the carto. It is not really permanent, it rubs off pretty easily especially with a little plain pg or vg, but if it starts to wear off I just re-write the label. I do use abbreviations so I don't write all over the whole carto! or maybe you could consider it decor...
I like the label maker and the colored band ideas too.
I like the label maker and the colored band ideas too.