This is my mahl stick: a Wilson 15° hybrid Mahl stick with a graphite shaft. Includes soft shark cover for delicate surfaces. (Plus a little sneak peek at part of my wip)
The shark cover really makes it for me
I’m a big fan of the dowel rod with a bent clothes hanger taped to it. About as cheap as you can get, quick to make, and I’ve never really run into any shortcomings for small- or medium-sized work.