A panel cabinet which accommodates a few logic blocks would be a solution for this problem, and it keeps the floor around objects clear. Real world imaging of such an industrial cabinet:
Below is a PLC controlled MotorControlCenter unit that is actually used in an IRL factorio for processing minerals like Pyrolusiet(for batteries/iron enhancement), Baryte and such. (controlling conveyors,elevators,classifiers,mills,burner PID's, etc)


I also wonder how interesting a specific step for granulate/powder resources filtered by air classifiers and air-transport-pipes would be for Factorio (as in advanced material processing).
Ball mill(vid)
Hammer mill
Classifier
piping
