How long are your flights? I love reading magazines but find that buying them at the airport is expensive. Let friends know that you will pick up their leftover magazines and I also subscribe to magazines for much less than the cover price. Even if I only read a few copies a year I usually make out better than paying cover price. I also try to catch up on old fashioned letter writing. My older relatives love getting "real" mail.

If taking early morning flights, skip the coffee/tea and SLEEP! Pack comfy socks and a pair of eye shades for a bit of a nap even on short haul flights under 2 hours. Even a 30 minute nap is refreshing.