My card holder has been through some serious wear and tear. With my metro card and building ID, it never leaves my bag or pocket. When I have a small clutch at night I will put my license and credit cards, along with some cash into my card holder so I know where everything is at all times.
It's an easy way to stay organized while throwing things in and out of bags and for easy access when you're always on the go. I would LOVE a new one this Christmas (hint hint mom) and all the designers are on board. I have so many favorites it's hard to decide which one I love most!