list of things i have found in tires(punctured through and left in by accident):
multiple kinds of screwdrivers in multiple shapes and lengths.
spark plug.
tons of wrenches.
jack ripper throwing knife.
fork.
battery
razor blades.
a few allenwrenches.
pocket change
sunflower seeds.(which by the way make strange clicking noises while driving)
tire balancer weights.
every kind of nail,bolt,nut,screw you can probably think of