Amazon.com: Brown Kraft Chipboard – Medium Weight 30 Point (0.03 inch) Cardboard | Thick and Sturdy, Great for Arts and Crafts, Packaging, Scrapbooking, Notepad Backing | 25 Chipboard Sheets | 8.5" x 11" : Arts, Crafts & Sewing
Custom Printed Chipboard Boxes | Muge Packaging
Custom Printed Chipboard Boxes| Printingblue.com
Chipboard Boxes | Chipboard Packaging | Custom Packaging Pro