I'm starting this thread as a companion to The "game" pre Flyertalk

Following are my favorites:

1. Valuemags ---> Concorde

2. Dollar coins
-I even bought a minivan to support this venture

3. Thank You Points for redemptions like ACY-YEG
(this provided around $5,000 in DL credit)

4. Budget car rentals at locations with dirt cheap weekend rates

5. Mistake fares
-these typically lasted for around 7 days during the early years