I thought it was cool that Jedi were supposed to build their own lightsabers. I've been wanting to build my own mobile phone as sort of a tribute. Reasonable point about Dudley's overconsumption.
Brooms were an example of consumerism in Harry Potter called out by that video that I linked. The whole thing about the Nimbus vs the Cleansweep vs the Firebolt.
I watched that particular video all the way through a few years and remember being surprised that I found it engaging. It had lots of interesting visuals and sound effects, while the Consumerist Dystopia one was afaict just somone talking in front of a camera.
I read the first few Potter books ages ago and lost interest after a while. More recently I have found myself reading a lot of Potter fanfiction, mostly because I'm too unfamiliar with the settings of most other fanfic these days. I have generally found the Potter fanfiction to be better than Rowling's originals.
There is basically no such thing as a working dumb mobile phone any more. All the old 2G and 3G ones are now bricked because the networks all cut over to 4G/5G. Otherwise what can I say, just avoid stuff with connectivity when you can help it. Also buy corded tools and appliances unless the convenience advantage of cordless is too great to do without. Otherwise you stuck trying to replace overpriced and sometimes hard to find batteries.
If something is completely FOSS then the software angle is less of a pain in my opinion. I'm still using a beat-up Thinkpad X220 that was made in 2011, but running Debian Bullseye on it. I'll update it to Bookworm or Trixie when I get around to it. Point is that I can do that, while any phone from 2011 is a hopeless dinosaur.