OkiData ML182 Turbo
I've had this printer for quite some time. It was given to me by the youth pastor at my parents' church when I was about 11-ish years old. It is extremely basic, but at least reliable, as long as you don't ask too much of it in terms of fancy print styles or whatnot. Some drivers for Windows can actually print graphics with this, but I have yet to find a driver in MS-DOS that can even do fancy fonts. It seems to be just unrelated enough to all of the popular printers to make finding a useful driver possible.