Heading off to work in the morning, I grab my ego, set up with an atomizer/tank. I usually (not always) fill it just before going to bed so it's ready. And I grab a cigar box that has "stuff" in it.
1 bottle of juice. 1 extra atomizer and several extra tanks. 1 box of cartomizers. (I don't normally use cartomizers, but that's part of the back up system - I can fill them and use them if needed.)
Sounds to me like you need one of those lanyard holders, I've seen post here where a lovely lady makes to order
Right now, I'm not carrying an extra battery, or any kind of charger. I plan to get a car charger which will stay in the car, and a regular charger that will go in the cigar box.
My major worry is that I will set the vaporizer down and simply not know where I left it. (Or possibly, in a bar, have someone walk off with it. I go dancing a lot, I leave it on the table, so that could happen.) Since I don't have an extra battery in the cigar box, I'd be screwed.
When I get a passthrough battery, it'll be my "main" battery, and I'll start carrying one of my regular ego 1000 bat's in the box as a backup.
The cigar box doesn't leave the car except at home. When I go in someplace, I just take the ego T. If I need any of the backup stuff, I'll go back out to the car.