Elmer's 20" X 28" Presentation Board - Black : Target
Amazon.com : STRAWBLEAG 11.75x16.5 inch Black Foam Board 16Pcs Black Poster Board 3/16" Thick Foam Core Backing Board Black Mat Boards for Projects Art Presentations Crafts Display Favors : Office Products
Amazon.com : Frienda 50 Pack Foam Boards 11x14 Inch Foam Core Backing Board 1/8 Inch Thickness Foam Poster Boards for Projects Foam Boards Presentation Board for School Crafts Office Art Projects(Black) :