I wish apple or some company would make a computer stick that plugs into a usb c hub for power and peripherals. No battery and no buttons other than power.
I don't see why it couldn't about the size of a wallet and offer at least as good thermals as a macbook air.
The Mac Mini is only 7 inches x 7 inches x 1.5 inches. It's not a stick but you could certainly mount it on the back of your monitor or under your desk and never see it.
I've seen those. They all are made to plug into the back of a tv through hdmi.
HDMI doesn't have power and typically no peripherals like keyboard and mouse. To get that to work as I would want it would need multiple cables plugged into it.
I just want to stick my computer into a hub like a flash stick and have it boot up.
I don't see why it couldn't about the size of a wallet and offer at least as good thermals as a macbook air.