An Apple M1 is decent enough for LMs. My friend wondered why I got so excited about it when it came out five years ago. It wasn't that it was particularly powerful - it's decent. What it did was to set a new bar for "low end".
https://www.microcenter.com/product/676305/acer-aspire-3-a31...
A brand new Mac Mini M4 is only $499.
https://www.microcenter.com/product/688173/Mac_mini_MU9D3LL-...
The only thing that is itching me to get a new machine is it needs a 19V power supply. Luckily it's a pretty common barrel size, I already had several power cables laying around that work just fine. I'd prefer to just have all my portable devices to run off USB-C though.