Unfortunately there are so many 'Gizmos' for your passenger to play with, some may be quite innocuous...
His... Door, Window, Sun Visor, Squelch control on the intercom, Air Vents and heating controls.. etc.
Then there may be a whole duplicated Instrument Panel.. Altimeter, Attitude Indicator, INS and Photon Torpedoes.. etc.
It's a bit like driving a car, where the other half likes a different radio station. You hope they don't fiddle at a critical stage of the flight.