It's on the fridge!
I would be lost without my fridge magnets with logos from different businesses and organizations. They are my rolodex. We have everything from the local pizza place to the emergency contact numbers for the pediatrician's office and the local police and fire.
They used to be nicely organized on the side of the fridge, but now they are used to hold up the artwork from my three-year-old. We are running out of space, so I think it is time to buy a bigger fridge.