I have done rasp pi
I have done mac mini
I have done hp lenovo dell tinys
I have done laptops

The 8 inch by 8 inch by 1.5 inch tinys use under 30 watts if they have an intel i5 6500t cpu

to me they are my favorite for nodes

you can attach it and your normal pc to a monitor that have two inputs.

This asus laptop is the first unit I used for a node. so far it is stable.