Hey! Then I think I'm one of the five...
I also felt the need for something like this and I made a very small GUI program for my
pdaxrom-fvwm project which can be swallowed by a FvwmButton bar for example and you can have the battery and the processor status there plus a clock (and if you click on the battery, you can change the backlight intensity and if you click on the proc. speed, you can change it too)
I've written it in the most resource sparing graphical lib I found. So it nearly doesn't use any, in fact.
The reason I haven't released it yet, is that I have some text and background image problem if I compile it on the Zaurus... On my main computer it's working perfectly.
Others (whithout fvwm ) can use it too, but it will be working in a window and then it's not as useful as in a taskbar.
I share it with you, I hope you like it!
There's an included README where I tell you how to compile and there's an i386 and arm binary too.
You can see the ugly version on this screenshot:
http://web.interware.hu/radon/pda/gpsdrive-cvs.pngAnd here's the beautiful one, compiled and running on my desk computer:
http://web.interware.hu/radon/pda/ztaskbar.jpgAnd the stuff itself:
http://web.interware.hu/radon/pda/ztaskbar-alpha1.tar.bz2Zumi