These are cute, I'd really like to see the "serious" version.
Something like a Ryzen 7745, 128gb ecc ddr5-5200, no less than two 10gbe ports (though unrealistic given the size, if they were sfp+ that'd be incredible), drives split across two different nvme raid controllers. I don't care how expensive or loud it is or how much power it uses, I just want a coffee-cup sized cube that can handle the kind of shit you'd typically bring a rack along for. It's 2025.
Best bet probably Flashstor FS6812X https://www.asustor.com/en-gb/product?p_id=91
Not the "cube" sized, but surprisingly small still. I've got one under the desk, so I don't even register it is there. Stuffed it with 4x 4TB drives for now.
The Mac Studio is pretty close + silent and power efficient. But it's isn't cheap like an N100 PC.
the minisforum devices are probably the closest thing to that
unfortunately most people still consider ECC unnecessary, so options are slim