My Favourite Computer, An Old Mac - Muezza.ca:

Surprisingly this Mac can still play with the modern world, at least a little bit. I can load Wikipedia via gopher, I can read Hackernews, I can edit my website and manage my servers from it, I can even chat with friends on it via IRC. It's not much, but it's something and it allows me to be productive whether I be typing a document, or writing a program in Think Pascal.

Usefulness may vary by needs - little to none of the software available to this machine understands any modern TLS requirements, so any https site will be unlikely to be useable. Javascript likewise was very different, so most modern web pages will break even if you can load them… But if your needs are met, this is a perfectly valid and charming setup still.