Bright CreationsCorrugated Cardboard Paper Sheets (8.5 x 11 in, Black, 48-Pack)

Bright Creations Black Corrugated Cardboard Paper Sheets (8.5 x 11 in, 48-Pack) for Crafts, DIY Projects, and Classroom - Cardboard Sheets - Corrugated Paper

Grafix Medium Weight Chipboard – 12"x12", Natural Acid-Free 0.057” Sheets, Create Three-Dimensional Embellishments for Cards, Papercrafts, Mixed Media, Home Décor, and More, Pack of 25

Plastruct STAS-8 O Stair 3'-0 PLS90664 Plastic Building Supplies