I currently have 0 coins and 0 bills on me. I had to borrow $10 from my wife to tip the bartenders at a wedding this past Saturday since I didn't want to go to

I currently have 0 coins and 0 bills on me. I had to borrow $10 from my wife to tip the bartenders at a wedding this past Saturday since I didn't want to go to an ATM. Cash (and coins) have their place but it's not worth the effort to make them more efficient anymore.