In junior high, before my family had a "real" computer, I cranked out many a school report on my parent's Panasonic Penwriter word processor. It was like an electronic typewriter with a tiny LCD display for entering text, but instead of a daisy wheel or something it had four color pens controlled by servos and some limited ability to do vector graphics, I remember doing some really nice-looking pie charts and bar graphs with it on bean sprout growth statistics. Way sharper and clearer than modern cheap inkjet printer output.
I recall it had a PC interface of some type maybe a parallel port, I was thinking today you could probably get it to spit out some really slick schematics if you could figure out how to talk to it appropriately from a PC. Who knows if it would still be possible to find the pen refills for the thing, though.