Plus "fuel pump on"
On some Cessna twins fuel pump on high could actually cause engine failures which was notable in a few crashes in the GoldenEagle.
Fuel tank selectors is another! I know of one Cessna 340 ferried all the way from the USA to India where it was collected by an Indian pilot to move the last 50 miles to its new base, He switched the fuel off by accident and landed in a lake before working out what he had done, the poor aircraft ending up at the bottom of that lake after going all that way to be lost in the last 50 miles.
Pace