Sleep or read the New Yorker. I save them.
I can drift off to sleep on a one-hour flight from SFO-LAX.
Otherwise, overnight, I take Ambien and snooze for around 7 hours.
Plan ahead.
I see your SFO-LAX and raise you the 19min CLE-DTW
If I'm not sleeping, I'm either watching/listening/reading(Stanza is a great app btw) something on my iPhone, reading a real book or watching the IFE.