This is the pattern I used for a specific jar I had from a “420” purchase. The number of rows and stitches will vary, based on your jar diameter and height, as well as the hook size and yarn type used…

The jar pictures was 2 1/8 in. diameter, and 2 1/2 in. from bottom of jar to bottom of jar lid, and I used worsted(ish) weight yarn and a 4.00mm G Hook.

You will need…
-Yarn
-Recommended Hook for Yarn Used
-Stitch/Round Markers
-Tapestry Needle
-Scissors
-Jar (or at least the dimensions of the jar you are making it for)