Just three stitches! Well, technically, four, but the last one is just a very simple variation on double crochet (going around the post instead of on top of the stitch).
I’ve done it in a couple of different yarn weights & blends and it’s a very forgiving pattern as long as your hook is suitable to the yarn. I recommend a single-colour yarn or one with a very long gradient to show off the stitching; shorter gradients will look a bit mottled.
Here’s the first one I did, in a 2-weight 100% cotton:
And a rectangular version in progress which is 100% merino and probably about a 4-weight:
Cute! I saw that you used RH self-striping yarn – what is the colourway?