BRAIN TEASER: A man stands on one side of a river, and his dog who doesn't know how to swim on the other. He calls his dog who immediately crosses the river without without using a bridge or a boat. How did the dog do it?
The river was frozen.
BRAIN TEASER: I'm wearing something with hands and a face, which has numbers on. What object do I have?
A clock/watch.
SCAVENGER HUNT: Find something made out of wood.
...
SCAVENGER HUNT: Find something that you can eat.
...
