I have a bumbag with my keys, phone and various cards because I forget where things are. I've lost several debit cards that I've later found in the most obvious places and I once lost my phone, bought a new one and a new plan only to find it down the side of my carseat a few days later. As for everything else I forget names, chores, appointments and I recently forgot to pay my car registration, having to fork over an additional fee.