Something I've been working on recently is collecting old and unused laptops from various people I know. Sometimes they're shitty Chromebooks that can barely be used but sometimes they're still perfectly good and recent laptops and people just got bored of them and decided to upgrade for whatever reason. I then put Linux on these laptops (even the shitty chromebooks) and distribute them to people at my college who need one.
With the date that Microsoft is stopping support for windows 10 approaching quickly, now's a great time to prevent e-waste by upgrading to Linux or collecting people's previous laptops as they upgrade. You can also get distributions that run better than windows on low-end hardware. Even if you don't know someone who needs a laptop, you can always do something like host a Minecraft server to make use of it.
Also, you can do this to phones too. There are plenty of custom ROMs you can load on Android phones to squeeze more life out of them. Let me know if you want recommendations.
Anyway, I hope that this can inspire more people to try and repurpose electronics to prevent them from becoming e-waste.
I did this too with a few laptops. Rule of thumb is, that if it runs Windows already decently, it will behave like a racing car under any distro/ DE.
Those special "low-spec" distros often look outdated and aren't as much as a joy to use. I would recommend trying something with Gnome, Cinnamon or KDE first, and if it doesn't run smoothly, then try something else.
Good distros for newcomers are Mint or Aurora / Bluefin.
The hardest part of using Linux as someone who isn't tech iterate is the installation part. It's extremely easy, but many people are afraid of bricking something, which isn't possible. Installing Linux is way easier than installing Windows. And as long as the new user knows where they can find the browser, they're good most of the time.
Regarding phones: sadly, this is way harder. Not only are most used phones either damaged or have a bad battery, but most have a locked bootloader, so you can't install other OSs. This includes most budget phones (Xiaomi, etc.) and Samsung devices.