I had the idea of getting some blank coasters of different material, shapes, etc. as small material samples for experimenting that could also serve as little gifts for friends and families (for ideas that turn out well).
After just a bit f searching, I came across This .
Wanted to share with the community, but also looking for feedback on the different materials they offer.
I also assumed it might spark some comments with other, related ideas.
Please let me know what you think or if you know of a better source of supply.