Amazon.com: 20 Pack Thick Blank Wood Boards for DIY Arts and Crafts, Brown Square MDF Board 1/4 Inch Thick Chipboard Sheets for Wall Decoration, Art Classes (12 x 12 Inches)
Amazon.com: Triton Products HDW-4 High Density Fiberboard, 24" x 48" x1/4", White (Set of 4) Pegboard, 24 Inch W x 48 Inch H x 1/4 Inch D, 4 Count : Industrial & Scientific