A friend gave me a Mid-2011 MacBookAir4,2 because some keys died, the battery lasts less than an hour on a charge, and it freezes up regularly when running MacO

A friend gave me a Mid-2011 MacBookAir4,2 because some keys died, the battery lasts less than an hour on a charge, and it freezes up regularly when running MacOS. I installed Linux on it and connected it to my 4K TV (at 1080p resolution). I use a wireless keyboard and mouse with it. It runs flawlessly, and since the fan rarely kicks in, it's replaced a much more powerful (but loud) tower PC. I mainly use it for surfing the web and streaming music, with some light YouTube use. It's no longer very useful as a portable laptop, but it's a great media PC. I have some even older 2009 white MacBook5,2s that run Linux fine, as will most Intel MacBooks manufactured in 2015 or earlier. They also tend to have fast WiFi cards, so performance seems better than their processors would suggest. It's a shame to see them scrapped when they can be creatively repurposed.