This is a great example of a good use case for 3D printers. The smooth marble run action combined with the interwoven organic forms would be a huge PITA to fabricate with any other method I can think of, even if your just making one.
A good use case for 3D printers is random, small, custom household items that greatly increase my quality of life, much more than it is a unique sculpture.
I'm not the person you asked, but depending on what kinds of quality of life improvements you're looking for, your budget, your 3D design abilities, and your tolerance for working on the printer versus printing with it, the answer will vary in terms of what works for you.
If you're casually interested, the Bambu Lab A1 combo will do most things you'd want it to do, fairly reliably, but with a closed ecosystem.
If you want something more robust, go for a Prusa, but be ready for a more hands on experience.
If you want an entirely customized bespoke with a high learning curve, go for a Voron.
I'll give you an example from my life. I got a set of cheap LED lights for a closet. They come with a little remote control to turn them on, but I didn't have a good place to put the remote control, so I made a little wall holster that's sized exactly to hold the little remote.
I also got one of those SimpliSafe home security systems. It came with a door sensor, but the sensor didn't quite fit our door frame. So I printed a tiny piece whose dimensions exactly matched the SimpliSafe and my door frame, so it allows the parts to meet up but doesn't look weird.
Of course, 99% of what I print is useless stuff that looked neat on Printables, but sometimes I make stuff that actually serves a purpose!
I know not to hope for it to ever catch on, but my dream date-time format would be:
year/day/hectosecond.second(.millisecond and so on to the desired precision)
The current date-time, to the second, would be 2023/308/342.65
The days, like the years and second-based units, are 0-indexed.
There are 100 seconds in a hectosecond, and normally 864 hectoseconds in a day.
And to go with it, I'd advocate either a "3-on, 2-off", or "6-on, 4-off" work cycle, depending on the nature of the work, or even just personal preference. This way, today(308) would obviously be on a "weekend" either way.
Water mined from the moon might be much cheaper by the time something like this is built. That being said, a giant sterile swimming pool seems like an odd feature for an interplanetary spacecraft. I'd rather see a well-balanced aquatic habitat, if anything.
I like this idea. To take it even further, I propose this wire terminate to a sturdy cylindrical plug which can rotate 360 degrees. Furthermore, if the signal were to be analog, it would allow universal compatibility with all other analog sound devices. I think this could be revolutionary.
You do you, but calling them "extremely good jokes" suggests to me you're just not familiar with this particular pattern (which if you used Reddit, trust me, you would be).