Another way to use up old wine bottle corks
Wine bottle stoppers are surprisingly versatile. You can make everything from coasters to individual mantelpieces. They even work great as temperature insulators, so, you can use them to make a larger square to put your warm casseroles on top. Nevertheless, the easiest way to repurpose them is to make them into cup placeholders.
Try cutting them lengthwise instead of half-wise, and pick those that have more stately designs to give them a vintage but refined look. Glue the halves to a regular cork coaster, and that is it. That will protect your wooden tables from both water and heat..