Good gifts for airline pilots?
Avoid cheap no-name flashlights IMO.
They may claim lots of lumens, but beam spill and throw matters a LOT more than sheer brightness for usability.
Streamlight ProTac 1L-1AA is just about perfect for both preflights and if necessary cockpit use, plus it works with CR123s or AAs and is available in the low-mid $30 range.