How do you keep a live bankroll?

[Whitewash]

Hoping some live grinders can help me out here:

I am primarily an online player, but I am starting to get into the live scene on the side. How should I manage a live portion of my BR? I'll be playing 5/5 NL live. I am definitely rolled for the game based on the money I have online.

Do you recommend I just keep X buy-ins in cash on me and store it somewhere so I don't have to always try to withdrawal and deposit money? If so, how many buy-ins should I keep in cash? (Not necessarily on me, but stored in my house or whatever.)