There are people “deshelling” Mac Minis and driving them via other power supplies

Here’s an M1 and somewhere in this guys Insta are photos of an M2 which is even easier as the cable is easier

https://www.instagram.com/p/CvP8FuLtzzr/

Edit: Here’s the M2 https://www.instagram.com/p/CxgRNuYrUyN/