Buy this: https://www.amazon.com/dp/B00OJ3UJ2S
Buy this, and stick this in that: https://www.amazon.com/dp/B089C3TZL9
I didn't even notice, I just picked the first 2.5" enclosure Amazon showed me.
What Thunderbolt can do however that is quite magical, is operate as a point to point network interface. Driver support can be a bit dodgy, but it's totally feasible to build a 3 node compute cluster with point to point cluster node networking over Thunderbolt at 20 Gb/s.
Looking it up just now indicates that such products still exist. https://plugable.com/products/usb3-tran
The usb-c version of the same is even more confusing, either it's a normal type-c cable and the software is all you get, or it's a cursed bespoke type-c cable that will haunt you for years.
https://www.dell.com/en-us/shop/visiontek-16tb-class-qlc-7mm...
(Rural problems: I tried to find a used car under $3800 on Craigslist here and there's less than 5 vehicles total 'by owner' and none of them drive on their own power. Maybe this is a good deal?)
https://www.cdw.com/product/solidigm-d5-p5336-61.44-tb-solid...