But let me try to make you feel a bit better. A lot of this retro hardware nowadays is more about maintenance rather than just using it. If you are into that, it is great! But for many it just comes to a point of trying ever harder just to keep these things going. It is to be the technology Sisyphus.
Last year I finally gave up on my Powermac G5 when the power supply went, a machine much younger than any Next hardware. I just gave it away to someone that had the patience to work with it. Unfortunately the FIF (F*K It Factor) is a thing that eventually creeps up and it becomes a case of passing these things onto others that have a higher tolerance for aging hardware issues.
Or maybe you put a mixtape in the tape deck.
But tl,dr: most everything I did was SSH based for network. Otherwise document editing, pdf viewing etc worked fine. I had a turbo color 33mhz with 128mb of ram.
I also had a ton of custom compiled replacement libraries friends and I worked on and we managed to get newer openSSL working with omniweb etc. I was able to use html mode gmail even! :)
Now I realize it's not bootable without a 13w3 to something video adapter, and a sun cdrom, and a sun keyboard, and more...
I reeeeeaallly want to get another one again.
https://news.ycombinator.com/item?id=35865933
Oh, here is a screenshot of my NeXT loading gmail:
https://www.flickr.com/photos/helfer/3947037084/in/photolist...
Dated 2009. So I think I was actually using it till 2010.