Yeah, just shopped a new mini-ITX. The “mini” is stretching it these days: most of the units sold are for gamers. Priorities in cases: thermals, cosmetic LEDS, accommodation of large GPUs.
Ended up getting a used Xigmatek case, about 1 foot cube, for $40. Rest is new (Linux on Ryzen)
Gorgeous, very nice build quality, a joy to work with.
But small it’s not.