Figs have dead wasps inside. A wasp will enter the fig, passing into a part of the plant known as the calimyrna while trying to lay her eggs. Eventually, she dies… and is broken down by a protein-digesting enzyme inside the
fig.
The smallest known adult insect is a parasitic wasp, Dicopomorpha echmepterygis often called fairyflies. Males are blind, wingless, and measure 0.005 inches. As larvae they feed inside other insect eggs.
A sword made from the blood of your enemies is technically possible.
If you separate the iron out of the blood of 300 adults, you could smelt it down to an iron ingot. This ingot would be enough to be used to create a longsword.

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