Thanks to working from home I've been able to save some fuel funds. So, I treated myself to a new cluster case for my little cluster.

i love it!

Four bays with a large fan, but using the PoE hats makes them too tall to stack, so it only has two with hats at present. I'm sure mounting them alongside the Pi's and using jumper cables to the PoE pins will probably work just fine I reckon.