I'm not yet a pilot but i always thought to myself flying mission flights like aid flights in africa, i would say there are good companies out there.
Like citiexpress only work from 6am untill midnight as in no overnight flights but they do have like a 3 day stop where you can do based in man fly to edinburgh to do leg to lcy then geneva then stay in a hotel overnight things like that but your not flying overnight
although don't get me started on solar radiation as im still pondering over that, and would probably want to only do night flights.