Here are a few suggestions, to get you started:
Before you go and buy something, check out your closet, there might be some forgotten
pieces that you can give a second life to. If there's nothing to work with there, then:
Visit your local craft store for 100% recyclable polyester felt.
Cork leather: The Little British Fabric Shop
Wool felt: Filzfelt
Miscellaneous sustainable fabrics: Pure Fabricz & Offset Warehouse
For a wider list of online shops that sell sustainable materials you can check out Refinity
Before you go and buy something, check out your closet, there might be some forgotten
pieces that you can give a second life to. If there's nothing to work with there, then:
Visit your local craft store for 100% recyclable polyester felt.
Cork leather: The Little British Fabric Shop
Wool felt: Filzfelt
Miscellaneous sustainable fabrics: Pure Fabricz & Offset Warehouse
For a wider list of online shops that sell sustainable materials you can check out Refinity