Frisbee passing is a simple coordination game for any number of participants.
Each pair of players needs one Frisbee disk.
The players are standing a few meters away from each other (like 5 meters / 15 feet or so). Within a short, defined time (like 2 or 3 minutes), the players pass to each other. Each throw that was caught by the other player counts as valid shot. The team that can score the most points (that has the most valid shots) wins the game.