Hillman 2.75-in Silver Square Wire Lock Pin/Clip in the Specialty Fasteners & Fastener Kits department at Lowes.com
20 Gauge Square Dead Soft Copper Wire: Jewelry Making Supplies | Instructions | Jewelry Making Tutorials
Goplus Hardware Cloth, 1/2 inch 19 Gauge Square Wire Mesh, Galvanized Metal Mesh Roll Fence, Chicken Coop Poultry Netting Garden Fence, Chicken Welded Wire Fencing (48'' x 50') - Amazon.com
Fencer Wire 1/2 in. x 2 ft. x 100 ft. 19-Gauge Hardware Cloth, Galvanized Welded Cage Wire Poultry Netting Square Chicken Fencing CA19-2X100MF12@HD - The Home Depot