When strolling in the woods, carry a big stick. Or a spoon. Or a shovel. Something for digging. A rib bone works well.
Springs from the seat of an old mercury that died in the woods long ago.
Canning jars with broken lids. Canning lids with broken jars.
A repository for treasures.
Rusty bits and pieces. Caps and lids. Cylinders and things.
Bullets?