I use a small Thumb Drive Case for my Batteries, Atomizers, Carts, and E-Dobits... WidowsBead sells them, as well as walmart...
E-Cig Case 2 on Flickr - Photo Sharing!
And also a larger case to hold PCC's, E-liquid, Passthroughs, and other stuff.
Got this one at Office Depot! I put the...