The classic grape design crochet bottle cap trivet. Cotton thread size 10 #6 steel crochet hook (or size needed for guage) 19 metal bottle caps (as found on glass coke. Ch2, dc2tog around, slip stitch in top of ch 2.
Using a 1.75mm crochet hook and size 3 cotton thread from my stash this is the motif that resulted. Ch 4, 19 tc in ring, slip stitch in top of ch 4. A trivet made of crocheted bottle caps.
I’d imagine the metal can help keep your drink. The classic grape design crochet bottle cap trivet. The project also incorporates metal bottle caps;