For short trips, a full battery on my phone and lots of music. For longer trips (longer = to Ecuador for example), the aforementioned full battery, plus another charged and ready, and books. Also, since I rarely sleep 24 hours before a trip (stress, packing and repacking and stressing about what I may have forgotten to pack despite it having been checked off the list 2x), I usually sleep through a majority of the flight.
For short trips, a full battery on my phone and lots of music. For longer trips (longer = to Ecuador for example), the aforementioned full battery, plus another charged and ready, and books. Also, since I rarely sleep 24 hours before a trip (stress, packing and repacking and stressing about what I may have forgotten to pack despite it having been checked off the list 2x), I usually sleep through a majority of the flight.