I had an interesting thought for my spin-off fantasy trilogy. In the Middle Ages, it was illegal for peasants to possess swords. However, some peasants in Flanders found a loophole to this law. They created a blade that was longer than a dagger yet shorter than a sword. This gave them a means to rebel when the need came. I am thinking of including something similar in my spin-off series. The weapon I am envisioning would be a combination of the Roman gladius and the Greek xiphos. As petty kingdoms rise and fall, the peasants will need weapons of their own to defend themselves against invading armies.