I buit my XP SFF rig for dedicated retro gaming a couple of years ago and to be honest I do a lot of day to day tasks on it instead of booting my more modern Windows 11 build. I just use last MyPal build, and 99% of sites work perfectly, even YouTube and GitHub. Only lately I see a trend to block me saying "you browser is not supported" but probably most a forced disclaimer than a technical limitation.

^^
If that machine is considered retro/vintage, then I haven't been daily driving much else at home for the last 16 years. Probably the last time I did anything "productive" here was when I still had to go to school, which must have been a little over a decade ago or so.

I use my PowerMac quad G5 to create D-VHS dubs of some of my favourite flicks. Is this a productive use of old hardware? Well, it keeps my D-VHS deck fed and keeps me from buying pricey D-Theatre tapes off of eBay, so... I guess?

For most transfers, I even let the four mighty PowerPC cores handle the video conversion! Why not, right? The Mac's connected to the network, so if my source file is 1080p, I can just grab the movie off of my file server and convert the 264 stream into a 1080i MPEG-2 TS right there on the G5. However, if the source is 4K, then I do the 2160p HDR -> 1080i SDR conversion on my main computer* before shuttling it over to the PowerMac for D-VHS transfer.

*which is multiple orders of magnitude faster than the G5 at transcoding. So why not use the modern computer for all transcodes? Well, something just feels incredibly right about encoding high def video on a 2005 workstation-class machine before watching it on a 2005 high def CRT TV. This entire setup would've been absolute, bleeding-edge insanity 20 years ago! Oh, and my main computer doesn't have FireWire. Even if it did, I'm fairly certain Windows hasn't supported 1394 since the Vista or 7 days.