@nebulos not exactly an answer but i had this project for my 2d design class this semester that was about this question! the professor had us use 9 different techniques in a grid to render a piece. my favorite of these was the "manual half-tone" in the top middle-- i did dots in as perfect a (diagonal) grid as i could, and then enlarged some of them to create value. coming up with 9 different ones was a challenge, but it was a fun exercise

if the project had allowed for it i'd like to have experimented with ink washes, too