I noted a few for my own practising and joke collection:
Q: What starts with the letter “t”, is filled with “t” and ends in “t”?
A: A teapot!
Q: If an electric train is travelling south, which way is the smoke going?
A: There is no smoke, it’s an electric train!
Q: What can you catch but not throw?
A: A cold.
Q: A house has 4 walls. All of the walls are facing south, and a bear is circling the house. What color is the bear?
A: The house is on the north pole, so the bear is white.
Q: What has hands but can not clap?
A: A clock
Q: What is as light as a feather, but even the world’s strongest man couldn’t hold it for more than a minute?
A: His breath!