The elastic cords or strech round cords are great for a vireity of craft making. The thick elastic round cords are 1/8"(D) with 300 ft = 100 yards per spool or per roll.
4mm 5mm 6mm 8mm 10mm 12mm 14mm Woven Flat Elastic Cord Band Sewing Stretch Rope For Diy Mask Craft Jewelry Making Diy White Blac - Jewelry Findings & Components - AliExpress
Wholesale 3/8 inch Flat Braided Elastic Rope Cord
Weststone Qty 1 Roll Bright Gold - 300ft x 2mm Round Metallic Stretch Cord Elastic Cords Elastic Stretch String for Bracelets, Braiding, Ornament
Black Shock Cord – Phoenix Rope & Cordage
110 Yards Length 1/4 Inch Width Braided Elastic Band White Elastic Cord Heavy Stretch High Elasticity Knit Elastic Band for Sewing Crafts DIY, Mask, Bedspread, Cuff(White)
Black Shock Cord – Phoenix Rope & Cordage
4mm 5mm 6mm 8mm 10mm 12mm 14mm Woven Flat Elastic Cord Band Sewing Stretch Rope for DIY Mask Craft Jewelry Making White Black - AliExpress
The Original Fantastic Elastic Tomato String (100yd. spool) – MIgardener
3/8 inch Flat Braided Elastic Rope Cord, Heavy Stretch Knit Elastic with Spool, White, 10mm, about 90~100yards/roll(300 feet/roll)
Polypropylene Shock Cord