It's too old to be much use with modern software but a stripped down Linux install works just fine.
Over a lazy afternoon I carefully stripped out all the modules, including taking the webcam and microphone out of the screen surround and it's now ready for when I get the time to build the physical enclosure. I'm particularly pleased with how bright and clear the screen is after a careful clean, initially it looked dismal.
My plan is to use this ridiculous stainless steel waterproof keyboard/trackball combo I bought some years back as part of the prop.
I'd also like to use this set of rackmount monitors, but they take a composite input.
I've seen products on Tindie that turn a VGA monitor into a proper VT100 compatible terminal but nothing for composite and I'd need it to connect over USB anyway. I have a small stash of composite displays I've picked up over the years and creating something to drive them would be good. It could be easily argued that a Raspberry Pi Zero is a better way to do this but then you've got three computers to look after and I'm a fan of using microcontrollers instead.
The laptop can also drive a VGA screen for yet another display but I think that would make the prop physically too big.