My laptop routinely gets filled with dust, which I use a can of compressed air (occasionally) to clean out.
Today’s invention is to build into such machines a small piston/cylinder/valve unit which compresses the air it contains every time the laptop lid is closed.
When the machine judges it needs cleaned (perhaps by actively monitoring conductivity on the surface of a circuit board for the effects of grime or perhaps spilt liquids) the valve would be opened and the machine’s interior blasted clean of crud.
This might also work for eg clamshell phones and other electronic kit embodying a possible lever mechanism.
