You do know that slugs and snails are like homing pigeons ... - that said I play boules with mine - into the road... the game is to see if they can get out of the road before the car runs over them...We got into trouble over this.......
Had a couple of friend's kids staying with us and we taught them "Slug Tennis", old tennis racquet, pick up and catapult into public area next to the garden.
Parent's weren't impressed!