Some of the things I have in my pockets on a daily basis are my phone, wallet, and keys. On my keys I also have a flashlight and a USB drive that I installed OS X on. That allows me to use any computer as a screen and run my stuff off the thumb drive. My wallet has some money, my library card, my Clipper card, and my school ID.
These items show several things about me. My keys and clipper card show that I’m somewhat independent. My thumb drive and phone show that I’m a techy person, and who doesn’t need a flashlight? My library card shows that I like to read. I don’t know why I carry my school ID around, because I don’t know what it’s for.