Wasn't there an early DeskWriter (HP Inkjet, Deskwriter? Deskjet?) which was Mac compatible through the serial port. Of course, finding supplies for *that* would be a trick, even if the heads still worked.

I only remember it because I kind of wanted one for several years but only had an IWII...

Another cool thing about the IWII, in addition to the LocalTalk option is the MicroSpot MacPalette II software. It lets the IWII use that optional four color ribbon dither out millions of colors. There was a serial version and an AppleTalk version.