Amazon.com: Incraftables Felt Sheets for Crafts (30 Pieces). Best Colored Felt Fabric Sheets (1mm Thick). Assorted Stiff Felt Sheets Paper Pack of 30 Colors (9” x 12”) for DIY Decorations & Sewing Projects
APOC® 22 Felt #30 Standard Protection
Amazon.com: ARTEZA Metallic Felt Sheets, Set of 30, 8.3 x 11.8 inches, 6 Colors of Craft Felt, 1.3mm Thick Soft Non Woven Felt Fabric Squares, Sewing Fabric for Creating Toys and DIY Craft Projects
Heavy Duty Asphalt Roofing Felt (30#) – Gardner Coatings
36-in x 72-ft 216-sq ft Felt Roof Underlayment at Lowes.com