To elaborate: You collect three marbles throughout the game, one red, one green, and one blue. Then you place them in a pedestal that looks like it has a sword in it. Then you tug on the sword. The 'Opening a Treasure Chest music' from The Legend of Zelda plays. And... IT'S A SPOON!
You then use said spoon to catapult yourselves into Spat's castle. The guard is shocked and greatly confused by this.