It usually takes 3 rigs to make me feel secure when I'm out for the day at work. I can vape all day at work.
Usually one box/side-by-side (currently Smoant Knight v1) and a couple of Provari. With one KFL, one carto-tank, and one dripper.
Whether work or home, I mainly just use one rig and only switch if it starts to need some work or if my throat is sore and I need something milder (like first thing in the morning).
I have lots of flavors, but seldom get around to using anything but my ADV, Tiramisu.