Amazon.com: 2 Pack Mirror Cast Acrylic Plexiglass Sheets 1/8" Thick (3mm) Easy to Cut Plastic Plexi Glass with Protective Paper for Signs, DIY Display Projects, Crafts, Shelves (Silver Mirror, 12" x 16") :
Amazon.com: DARENYI Black ABS Plastic Sheet, 12" x 16" 1/8" Thick (3mm), Flexible Than Plexiglass Sheet, Moldable Than Acrylic Sheet, DIY Material for Home Decor, Craft Projects (2 Pack, Smooth & Textured