I worked on-and-off the last several weeks drafting signage and control panel graphics, and today finished installing them.
After searching around and trying a number of freeware graphics programs, I finally settled on using PowerPoint. Eventually, I'll dig out the camera and post some photos.
To finish them, I went ti Kinko's and had them create color printouts on cardstock (black background with mostly white graphics, and color highlights), then laminated onto this stuff that's laminate on one side, but adhesive on the other; Kinko's used it themselves for some of their keyboard and phone notes. Works great, so far anyway.