I've got some older PC hardware sitting around and would like to put it to good use instead of getting rid of it, especially considering how expensive hardware has gotten.
I've seen people turn old gaming PCs into NAS setups, Plex/Jellyfin servers, game servers, etc. Really curious what you guys have done with yours that turned out to be cool and actually useful long term?
Any ideas and tips appreciated!

Back in the 90s, if your PC had a Sound Blaster (or the legendary Korean 'OKSORI' sound card) and a CD-ROM drive, your PC immediately turned into a living room karaoke machine.

This was Sekwang Karaoke (세광 즐거운 노래방):

• The UI Aesthetic: Chunky wood-grain speaker skins, faux-LED track displays, and volume/tempo sliders built directly into the software interface.
• Visuals: Low-res 256-color dithered video clips playing in a loop while the iconic green/yellow lyrics synced to MIDI tracks.
• Sound: Powered entirely by FM synth / General MIDI via Sound Blaster OPL3, Roland Sound Canvas, or local wavetable cards.

You’d plug a cheap dynamic mic directly into the sound card's mic-in port, gather the family around the heavy CRT monitor, and sing along.

Did any of you have dedicated CD-ROM karaoke/multimedia software like this on your vintage rigs back in the day?