I recently switched to dwm, and I've been using the systray patch because I liked having a drop down volume control. But I decided to go patchless, so I made a slider app to provide something similar:
https://github.com/ianremmler/wjt (pronounced "widget", of course) Adjust the slider with the keyboard or mouse, and the value is printed to stdout. The two examples in the repo are what I'm using for volume and brightness control on my laptop. I based it on dmenu, and it should fit in well with the other suckless tools. I hope others will find it useful. Thanks! -- - Ian.