
Children used to play a game with the conkers by drilling a hole in them and putting a string through the conker. The game is played between two people and each person takes turns to hit the other person's conker trying to crack it. Who ever cracks the others conker wins!
Now schools have discouraged children playing this game and even provided safety goggles if they do allow it.
There is even a World's Conker Championship in Northamptonshire.
Here is a great website for more information.
All the Best!

American to Britain