Poohsticks

Each player picks a stick and notes something unique about its shape so it can be told apart from the others.

All players stand on the upstream side of the bridge and drop their sticks into the water at the same moment.

Everyone hurries across to the downstream side of the bridge before any stick floats out.

Players watch the water below, and the first stick to emerge from under the bridge wins that round.

Gather fresh sticks and repeat for as many rounds as the group likes.