I have MVPs and mini-Reos.
I change flavors a lot
throughout the day, so it's never a matter of carrying just one. So i bring an MVP, a Reo and a couple of twists, each with a different flavor. I just carry them in a purse that has inner pockets that allow them to stay vertical and I make sure that they're turned off when they're in the purse. At home I keep them in a stand, or in a coffee cup on my desk at work.