Below are the materials I recommend for this project. You are more than welcome to go rogue, just be sure to check your gauge to manage sizing. Some links below are affiliate, meaning I'll make a small commission if you make a purchase, but this is at no cost to you.
In this video, I'll walk you through how to attach the wooden ring to your coaster. It's done with single crochet (sc), but I'll help you sort through exactly which stitches to go through, how to hold the ring, and all the little nuances that go into finishing this piece.
Review basic stitches + skills as needed.
I am quite human, so you may find a note or two here in the future. At the moment, this project has no known errors, or discontinued materials.
Psst. This is my knit version, but take a look at the color blocking + striping options. If you decide to make a set of 4, consider designing them to complement each other.