Virtual II lets you plug in a real printer into a virtual Apple IIe. It's much, much quicker than this web-based emulator. Unfortunately, when I print it's mostly fine, but skips one single line. I don't think it's flow control issues, though, since it almost entirely works.

Instead I print to PDF, and then use an older Ghostscript to drive the printer. It requires some scaling, though.

Holiday cards this year are sorted, at least!

https://twitter.com/joshu/status/1601454795885199366