Ravelry: Flip Flop Coasters pattern by Rachel Choi
How to Make DIY Flip Flop Wine glass Coasters or Holders/ Homemade Wine Glass Coasters-Tutorial - YouTube
Crush with Grapes Flip Flop Stemware Wine Glass Coaster Set of 4
Drinkwear 4-Piece Framed Rattan Flip Flop Coasters for Wine, Beer and Cocktail, Ideal for Wine Lover, Bar, Holiday, Housewarming, Party, Wedding and Birthday - Walmart.com
Drinkwear 4-Piece Flip Flop Coasters for Wine, Beer and Cocktails | eBay