Something that also exists (but are mainly used on pure or nearly pure electrical systems - think old-school, pre-microcontroller/cpu ladder logic relays and co

Something that also exists (but are mainly used on pure or nearly pure electrical systems - think old-school, pre-microcontroller/cpu ladder logic relays and controllers) are "quencher resistors"; these were resistors placed across the coil to absorb the voltage spike. You sometimes see them on automobiles, mainly older vehicles.