At my work there are some interesting bits of scrap metal sometimes.
A few months back I was able to snag some nifty arrow shaped off cuts from Jared on the wire cutters and I combined them with some scrap cross cut blades, Krylon khaki spray paint and clear label tape to make these markers for Chain of Command (or any other rules I guess):
The trapezoidal cross cut blades just happen to be right for a large FoW infantry base:
Here some troops demonstrate their usage. One section goes tactical behind the hedge while the section in the ruins sets an overwatch:
Both are approximately 1/8" hardened steel, so they should last a long time!