That's nice. Usually, I carry a leather wallet with two pockets, too. One for the bank cards and the other is for the cash. The, I also carry one purse for the coins which I often use to pay for fares when commuting. But other times, when I prefer to travel very lightly, I would just slip some cash inside my phone case, then some coins on my pockets. That so, I'll be only carrying my phone. If I run out of cash, I have a backup on my e-wallets and will pay using QR codes.