Interesting, that felt (hat) made of the tinder mushroom! I went searching for more, already found out someone made such hats (baseball caps type) and sold them on Etsy (but not available at the moment). I go on searching, I want to know how to do it. Such mushrooms grow here on dead (or almost dead) trees.
Edited to add: already found a FB page on amadou products (
https://www.facebook.com/amadouproducts/) and youtube videos on growing textiles with fungi, not the same but even more interesting: it grows in the same way as making kombucha! But this is stuff for a different thread (maybe there is already?)