I have the Pilots' free flight atlas of the Eastern Hemisphere. It contains 1:2000000 (2 mil) or 1:4000000 (4 mil) charts (scale depends on continent) for basically the whole Eastern Hemisphere, with virtually any decent size airfields, including a lot of green ones, listed. Plus some other semi-useful info like volmet frequencies, de-icing fluid holdover times, Africa regional procedures, the morse alphabet and a list of JAA member states.
It's great to spend a few hours dreaming of far, far away destinations to fly to, planning that proverbial flight to Australia and so forth.
Mine is the 3rd edition, ISBN 3-00-003648-2, but there may be newer editions. And there's one for the western hemisphere as well.
Obviously, if you have serious money to spare (or are hoping for lots of free rides) give him a Bottlang subscription.