Go deeper and you’ll find the circuit boards.
These can serve two purposes.
One, you can create an arrowhead.
Snap the board. Grind it against a rock until you get the ideal shape.
Attach it to a shaft, and you’ve got a spear for hunting and protection.
Alternatively, you can create a razor sharp cutting tool.
Simply grind the sides into a sharp point.
Watch yourself, this thing is deceivingly sharp!