I've long considered getting a netbook, slapping freedos on it and running WordStar or WordPerfect as a writing deck.

I'm not sure how I would get my files I create off the device since USB support isn't really a thing.

These programs are great for sitting down and writing with no distractions, but if you have a setup with directories full of word docs, text files, various graphics, even excel sheets all related to what you are working on that you need to refer to and cross-reference, they are less useful than an older version of Word or OpenOffice/LibreOffice. And they are difficult to export, share... there's a reason we don't use typewriters anymore, or DOS programs whose output is confined within a single program.