Upcycle plastic bags to create red, white and blue crochet coasters. They also have a matching placemat crochet pattern. This is perfect for a variety of American holidays. The same idea could be used in different colors to make picnic coasters for everyone.

A stitch pattern uses smart spacing to create a dragonfly (not to be confused with butterfly stitch) that forms the center of a square crochet coaster pattern perfect for spring and summer gatherings.

The tiniest little addition of triangles can make a circle look like a kitten! This crochet pattern, which includes written instructions as well as a symbol chart, is for sale on Ravelry. Make these with or without the cute bow!

Simple crochet circles can easily be made to look like animals simply by adding a face. One pattern-available to download free on Ravelry-is a groundhog crochet pattern that will make your party guests smile as they set their cups down.

Filet crochet is hardly the only technique for making crochet coasters. Tapestry crochet is another great option for a set of coasters that complement one another.

One unique crochet coaster pattern uses filet crochet reminiscent of vintage doilies. If you can't read filet crochet charts, that's okay because the designer also includes a symbol chart. This pattern is one of a set of three different patterns that you can mix-and-match for square coasters.

Make crochet coasters that are great for back-to-school patterns and end-of-year teachers' gifts. They are available for sale through Ravelry.

What's really great about a kiwi coaster pattern is that you can change the colors on this simple pattern and have an entirely different, creative, crochet coaster.

People always like to crochet fruits and vegetables, and of course they make a perfect theme for coasters, which are most often used during meals. One set of free patterns includes 6 different fruits, so you can mix-and-match designs to make fun coaster sets.