We used to have a plotter when I was a teenager, in the 90s. My dad was into any kind of tech, and bought it 2nd hand, even though he'd never done any kind of CAD or anything like that (he did that with all sorts of stuff). I think it was a Roland device, and I think it was A3 sized, but it might even have been A2.

I got a copy of AutoCAD from a warez site (downloaded over dial-up, obviously!), and learned how to use it, using the plotter to print my masterpieces - things like floor plans and building elevations - yeah, I was a weird teenager, and went through a phase of being interested in technical drawing. I thought I'd end up as a draftsman or an architectural technologist.

Anyway, it was absolutely fascinating to watch the plotter at work! The pen would fly across the page at high speed to the next target site, then make all these incredibly quick, tiny, precise movements, before flying off to another part of the page. I can still remember the pleasing electrical whine of the motor as it worked. Wonderful bit of kit :)