1/16" ABS Plastic Sheet 12" x 24" x 0.0625", 3 Pack, for VEX Robotics Plastic Sheets - Robosource.net
PRIMECO ABS Plastic 0.236-in T x 24-in W x 48-in L Black Plastic Sheet in the Polycarbonate & Acrylic Sheets department at Lowes.com
Amazon.com: Zuvas Black ABS Plastic Sheet 12" x 16" x 1mm 6 Pack, Flexible Than Plexiglass Sheet, Moldable Than Acrylic Sheet, DIY Materials for Home Decor, Handcrafts (Matte & Textured Finish) :