I would have to say my very, very old Puma sneakers... imagine these: (ripped from google images, as I do not have a camera on me at the moment)
... only in dark blue, stained from too many rainy days, soles worn thin enough that my soles can feel gravel, and a (small) hole in the big toe. Why haven't I thrown these out yet? ... Maybe I'm just waiting for something like this to come around.