My functional pv in my shirt pocket (currently either an eGo style, or a Puck style.)
My backup supplies reside in a small eGo case, in my coat pocket. Haven't figured out how I'll carry that in the summer, yet. It usually includes:
1 large paperclip bent into a double-sided t-handle, with one straight end and one hooked end
1 very slim case with two small SS tweezers, one pointy, and one angled
2 cartomizers of differing types
1 spare atomizer with drip-tip
1 10ml bottle, or two 3ml bottles of e-liquid
1/2 folded up paper towel
1 carefully bent bit of a staple, for cartos with center pins that won't coax out when needed
1 fully-charged eGo battery