Do you have a decent knowledge of the various flags of the world? Maybe you’ve been caught unawares a time or two (or ten), but that can all be fixed with this set of playing cards. 52 different flags are shown on the cards, so you can play your card game and learn at the same time. That’s not all the flags, mind you, but it’s a start; the CIA has a Flags of the World Factbook if you care to see more.
Available from neo-utility, 12.00.