My first wallet card post was 2,264 days ago on January 5th 2015. I'm not 100% positive who started the craze. I'm thinking Junior Junkie? Recently, my daughter caught me looking at my childhood Lenny Dykstra rc which has been in my wallet for 6 years now, and asked if she could have it. I was reluctant at first but thought who better to carry on the tradition than my daughter.