The following ideas are not exactly what you ask for, but maybe they are worth considering?
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I don't know what operating system you use, but for me old computers is how I got into linux. Linux Mint is very easy to install and to use, so it prolongs the life of perfectly good machines that are too old to be updated by proprietary software. Personally, I was doing most updates so that the laptop is as functional as possible for the longest time, and I was always doing the secuity ones. A few years back a friend gave me a 2006 laptop and it worked kind of ok with an old version of mint, it was just very slow. This one was given to another friend who didn't have any.
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Depending on where you live there could be a makerspace, or a relevant collective that could use them, or parts of them.
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If they are not working anymore, you can use the parts to do crafts: jewleries, pins, fridge magnets, keychains, light fixture, wall decoration, photo frame, book holder are a few possibilities.