[microtherion]

I recently picked up a used Epson HX-20 for a very reasonable price. It's still an amazing design, and could probably still be used for actually useful tasks.

[MomsAVoxell]

I have the Olivetti M10 version of the HX20 - its very definitely something I could type on all day, writing a book or some such thing.

My iPad with smart keyboard, not so much. I just get distracted by all the apps.