White Ultrathin Elastic Beading Cord | Hobby Lobby | 587063
White Oval Cord Elastic | Hobby Lobby | 794933
Amazon.com: Elastic String for Bracelet Making 0.8mm Clear Nylon Cord 100M Crystal String for Jewelry Making DIY Beading Stretchy String for Bracelets and Beaded Scissors, Stretch Necklaces Threads