This is only one of several dozen places, https://feltmagnet.com/crafts/coffee-filter-crafts-and-uses. I was looking for the one that used the dried used coffee filters to make collages or pictures on a piece of felt or linen and framed to put on your wall. If I come across it, I will send it to you. When do you or Jamie get a chance to be on the discord chat channel? Love to chat sometime.