These would be great for this project: DIY Fabric Flip Flops!
$1 Flip Flops : Offer valid 06/20/2015 at Old Navy stores in the United States (including Puerto Rico) only. Offer not valid at Old Navy online. While supplies last. Select styles only. No adjustments on previous purchases. Cannot be combined with other offers or discounts, including Gap Inc. employee discount. Limit 10 per customer, per transaction. Free Flip Flops: LEGAL RESIDENTS OF THE 50 UNITED STATES (D.C.) AND PUERTO RICO, 16 YEARS AND OLDER. VOID WHERE PROHIBITED. Ends 6/20/15. For Terms and Conditions and complete details, visit a participating Old Navy store. Sponsor: Old Navy, LLC, 2 Folsom St., San Francisco, CA 94105.