A plastic canvas circle is a round, rigid plastic sheet with a grid pattern, used for various craft projects. It serves as a base for needlepoint, cross-stitch, and other embroidery techniques. 

Uses

• creating decorative items like coasters, ornaments, and keychains,
• or as the foundation for sewing 3D designs such as flowers, buttons, and small accessories.
• It's especially popular in DIY and home décor projects.