I Am the Real Kim Kardashian
This guy sitting at a cubicle behind me just complained about forgetting his wallet. Now he has to ask a colleague to borrow lunch money, let him in and out of the office area to go to the bathroom (we scan our IDs for that), and live the rest of his day being chaperoned like a child.
When I forget my wallet, I never feel like a child. That's because I have a promotional mobile device pocket on the back of my cellphone (which I never forget because it's literally attached to my hand. Yes, literally. I'm addicted to my phone.), which carries all of my important cards.