Out of all, perhaps the one that is most needed is making TNT explode and break blocks underwater. Sure, you can make TNT explode underwater and it will even cause damage to both the player and ...

The rest of the TNT can be placed going towards the water source block, but not covering it. Ad Two levers, one on each side, should have redstone going down each row of obsidian.

They have charming aesthetics that perfectly recreate the design of the Creeper and TNT crate and their compact size dimensions of 10.4 x 10 x 10 inches help them fit well in tight rooms like ...