A one pound block of totally edible beeswax runs about $5.00
Use a wire cheese cutter to cut off small section and you can rub it on the entirety of an uncoated blade or just draw the edge across the section for a coated blade. I fill a travel soap case with molten beeswax and take it camping.
It's stable and doesn't re-melt too easily.
It's non-toxic.
It's dye free.
It can coat exposed steel and preserves the patina.
It can lubricate screw threads, shock pole fittings, etc.
It can waterproof leather.
It can be smeared onto chapped skin, though reapplication will be more frequent than with a proper balm.
It can be pinched, worked into a ball to soften up, and patch a pinhole leak in a shell, rainfly or poncho, or seal a tent seam to get you through the night.
It can be smeared onto glass as an anti-fogging or anti glare shield for your compass or sunglasses without harming coatings.
With some natural cordage, you can produce a makeshift candle if needed.
You can use it to whip frayed ends of line back into some semblance of normal.
You can seal all of the pores of an eggshell and keep an uncooled egg from rotting for up to three months, though this trick works better using petroleum jelly.
In a severe pinch, you can eat it and at least shut up your stomach for a moment.
Beeswax rocks.