https://www.sfgate.com/news/article/Illinois-man-81-uses-antique-walking-stick-to-15740009.php

Don't screw around with old dude and shillelagh!

There's nothing like a nice piece of hickory.

12 gauge comes to mind - but a good chunk of solid wood will work.
(I was trained on 36" military riot batons, myself) Fond memories.

Based Stickman's grandaddy