You could probably make these easy Tunisian crochet napkin rings without a pattern, but here are the instructions anyhow in case you need them.
Tunisian Crochet Napkin Rings
Yarn: Worsted weight, small amount each of 3 colors
Tools: Size J afghan hook, yarn needle
Gauge: Not important
For each napkin ring:
Chain 20, starting with color 1 and switching to color 2 in the last chain.
Complete 7 rows of Tunisian simple stitch, changing colors at the end of each pass.
Complete 1 pass of slip stitch to bind off.
Weave in all but one tail. Use the remaining tail to sew the seam, then weave it in.