: Fill the Dispenser with random items like Diamonds, Iron Swords, or even dangerous items like TNT or Spawn Eggs.
This method is perfect for Survival mode as it uses basic Redstone components to trigger a surprise when a block is broken. : Dig a 3x3 hole that is 3 blocks deep.
: Breaking the Sponge will trigger the Observer, causing the Dispenser to fire your loot. Method 2: Command Block Setup