Ask HN: What hardware design do you love?

Ok, it might sounds silly but there are pieces of hardware that I find incredibly beautiful. I was curious to know what HN readers have in mind about this topic.

For me, there are 2 objects I find wonderful and can look at it for hours:

- The RaspberryPI Zero because of its size and design. The circuit is wonderful (the mix of gold and green) and how powerful it is for its size. I'm still amazed that this is a computer.

- The MiniDisc because it looks like a something retro but also futuristic. I never had a player, I only have a blank disc I bought before it disappear. It's also a format you will see in movies (like Matrix or Interstella 5555). I think because I never used one, it feels like I'm holding some kind some sci-fi object. I assume how silly it sounds for an old (and failed) music format.

What's yours?