Corrugated Cardboard is probably the least expensive material for prototyping. This is plain old corrugated cardboard. Universal, Epilog, Glowforge, Boss, Trotec, Dremel, Orion, FSL, Muse, Full Spectrum. Laser cutting is no problem. Pack of 12.
MECCANIXITY 100Pcs 12x12 Large Corrugated Cardboard
Staples 48 x 24 x 12 Shipping Boxes 32 ECT Brown 10/Bundle
50 full sheets of corrugated cardboard pads. Dimensions: These cardboard squares measure 9x12 inches. B-Flute corrugated cardboard 1/8 thick. 9 x 12
Golden State Art, 50 pack 9x12 Corrugated Cardboard Sheets Cardboard Inserts Flat Cardboard Layer Pads for Packing, Mailing or Art Crafts (1/8 Thick
Corrugated Boxes 13 x 13 x 13, Kraft - ULINE - Bundle of 25 - S-4317
2 Pack 12 Feet x 35 Inch Corrugated Cardboard Roll
Low-Risk Investing in Cardboard Stocks - Cabot Wealth Network
532 Corrugated Box Warehouse Stock Video Footage - 4K and HD Video
36 Corrugated Cardboard Sheets 12 x 12 Inches Brown
MECCANIXITY 100Pcs 12x12 Large Corrugated Cardboard
36 Corrugated Cardboard Sheets 12 x 12 Inches Brown
36 Corrugated Cardboard Sheets 12 x 12 Inches Brown
12 x 12 x 20 Corrugated Cardboard Boxes (Brown / Kraft) - Sandbaggy