Even if you’ve never been curious about what computers in the 80s looked like, you might like to see all the emulators on this page.

Multiple computers are covered here, including the Commodore 64, Amstrad CPC, the Spectrum 48K and a few others I’ve never heard of.
The nice thing about these is that they run in the browser, so nothing else to install. The files are tiny by today’s standards, and they run immediately. No need to learn an arcane set of commands to load and run your programme.
It’s also given me a whole new appreciation for the Amstrad CPC and Speccy as demoscene platforms. The graphics and sound of the Amstrad platform are quite impressive!
A treasure! Thanks!