For a fairy chalk mat I made last week, I used eco-fi for the first time on the chalk pocket. Otherwise known as Kunin, this felt is made entirely from 100% post-consumer recycled plastic bottles. It is quite hard to find in Australia, but I ordered some online through The Thread Studio based in Perth, WA.
My previous chalk mats have not consisted of felt at all, but I thought I'd give it a try this time around seeing as a have a new recycled material to try out.
The eco-fi is the brownish felt square you see in between the pink fairy fabric. It is a study fabric, which is great to keep chalks in place.