I have done nothing relating to costuming this month. Mostly that's because I've undertaken a temporary job, working for the US Census Bureau. It has left me with zero time and energy to do anything extra.
But I did find a video that mentions an insole with nalbinding on it. The video is by the Medeltidmuseet in Stockholm, and as you might expect, it is in Swedish. However, it gives a look at a leather sole with a bit of nalbinding along one edge. This find is dated to 1300-1400 CE. The link can be found on the Nalbound blog, here, which is in English and gives a bit of perspective on the find. (Kudos to Anne Marie Decker, who writes the Nalbound blog.)
Was this bit of nalbinding part of an insole? Or is this evidence of a nalbinded sock with a leather sole attached? The blogger at the Nalbound blog thinks it's an insole because the "row [of nalbinding] appears to follow the edge of the leather sole. That direction under and along the arch does not match the row direction that I see in contemporaneous nalbound socks." It's an interesting look into a different way that nalbinding might have been used during the medieval period.