Beginning of the Earth
How can you make your own compass?
Take an ordinary needle from your mother's sewing basket and stroke it a few times always in the same direction with a toy magnet which you can buy for a few pence in any toy store. Now cut a very thin slice from an ordinary bottle cork, and float it on top of a glass dish full of water. Place the needle on the cork, and it will make the cork swing around until the needle is pointing north and south.
How can you make your own compass?