I’m glad I read this thread. I didn’t know that there was a MagSafe wallet for iPhone that I can use to hold my cash. It will save a lot of space in my pockets, and I can still use it for restaurant tips and at small businesses that only accept cash. There is even enough room for my credit and debit cards.I travel all over the world and always carry some local currency. In the US, I have $20 in small bills for anything that might come up. You never know.