.. I think I would love to have such miner in my house running all the time like heater in the corner. I would be more than happy to pay the bills for it since it will be generating something all the time. I am anyway holder of bitcoin so if they just mine and sit in my wallet then also I would be more than happy.
However, this has to be real simple layman consumable product with not much wirings, not much maintenance kind of stuff. Since I am not a hard core miner I would be more focused on the hobby scale and flashing it as if I do mine.
The only practical heating use I can think of is an egg incubator for 1-5 eggs 
The miner is 'fire and forget' once you've got it running. It will start mining after power up without intervention. The configuration isn't hard either. That leaves the assembly; I'm not going to produce complete kits for different reasons, so in the end you will have to at least fix the heatsink (not sure if I will sell them with the pcb) and fan (ditto) to the pcb (and apply thermal compound), either using tie wraps (that is what I am using rn) or 3d printed or laser cut brackets, and get a suitable usb charger + usb-c cable (and optional usb trigger pcb so you can power the miner with 9V). You can find some more info on this here https://github.com/rapsacw/aSiNine_and8