Bucket

A bucket is presented as an option in the interactive section for Raiding the Base.

The Anonymous Frog gets a bucket filled with water, places it in front of the fence, then gets electrocuted when he touches the water, leading to a fail.

Fail message
If it were redstone, it would simply wash away!)

References / Trivia

 * The water is placed in a cube, directly referencing Minecraft. It also appears to be waterlogged inside the fence.
 * Unlike in Minecraft, the water does not flow downwards onto the ground.
 * Redstone is an item that can be placed in Minecraft. If water touches it, it drops as an item.