Christmas gifts for my parents. I've had them on Chromebooks for the last few years, and my father is a tinkerer (Western Electric in the 70s) who routinely opens up laptops, phones, cameras, etc. for repairs or just because.
"just because" is a great personality trait to have (in the context of learning more) and I'm thankful my father had the same attitude.
When I was a child we used to disassemble mechanical/electrical things around the house simply because I asked "How does that work?". On occasion the reassembly didn't quite go to plan and a replacement kettle/toaster/VCR had to be sourced rather swiftly :-)