I had the fortune of snagging a cheap Stentura 200 SRT from eBay. I did end up using it for a while, even wrote my CompSci bachelors dissertation (both the software and the write-up) using it.

Later, I modified it to make it look more steam punk: put leather imitation key covers, repainted it; and I also replaced the internals with a Raspberry Pi (model 3B I think) to make it be more like a laptop and not require a serial port.

For my undergraduate degree I wrote a Scheme to Java byte-code compiler, which was pretty fun. The dissertation is available on GitHub and the compiler is in the same repo

It wasn’t terribly fast, but it did work, including first-class continuations (probably the biggest reason for the slowness is the stack representation).