Stall idea's / games for a carnival please ?

Good for you raising funds for your local school - at our school fete last year they had a kids paddling pool with some ducks that you had to fish out with a small fishing net, numbers were painted on the bottom and you had to retrieve an odd number to win a prize. They also had a malteser bash. The person running the stall put a malteser down a tube and you had to try and bash it with a small plastic hammer as it rolled out the bottom, the kids loved it again if you managed to bash the malteser you won a small prize.