There are many different ways that tarps can be fastened. Here are some of the main options for securing tarps.
Shade Cloth Plastic Snap Grommets
Tarp Toggle Fasteners - Stayput Toggle Tarp Fasteners - Easiest Tarp Fastener Installation! Just install tarp toggle fastener onto wood frame or wall
Stayput Toggle Tarp Fastener - For 3/8 inch Grommet Hole Size - 10-Pack
Brass Grommets with Plain Washers – Size #3
Clear PVC Vinyl Tarps - 30 Mil Heavy Duty & Fire Resistant
Poor man's quick release fasteners - Heavy Duty Tarps
Clear Tarps for Patios, Gazebos, Pergolas, and Screened in Porches
Buy Pres-N-Snap Die Set for 1 gross grommets with Spur Washers
General Tools Brass Grommet Fastening Kit with Case, Includes (6) 1/2 in. and (6) 3/8 in. Grommets 81264 - The Home Depot
Super Heavy Duty Tarp 20.5 Oz Without Grommets, Cut to Size
103pc GROMMET INSTALLATION KIT TARP TENT POOL COVER REPAIR - California Tools And Equipment