Plaskolite Extruded Acrylic Sheet: Art Paints: Amazon.com: Industrial & Scientific
Amazon.com: Polycarbonate Sheet - 12" x 12" - 2.8mm thickness - Good Glass Alternative used in POP Signs/Displays, Skylights, Pool Enclosures, Machine Guards - UV Stabilized, Low Flammability & Burglary-Resistant : Industrial
Amazon.com: Polycarbonate Plastic Sheet 12" X 24" X 0.0625" (1/16") with Resource Kit for VEX Robotics Teams, Shatterproof : Industrial & Scientific