Or you could look up a tiny case like:I would be! I'm in the US. If I could smash this into a Lenovo P360 Tiny I could die happy.
A tiny machine like this could be powered by DC and could easily be smashed into an arcade cabinet or even a trailer for gaming.
NFC Systems
Ultra small form factor enclosures designed by Joshua Sniffen in the United States.
store.nfc-systems.com
I have one and hopefully, it will fit:
B650e-i MB
Ryzen 9 7900
GaN 250W PSU
64GB RAM
6TB NVME
RTX A2000 with this mod.
Something a little more personal than P360 and just as portable.