The Hanging Crate is an object which can be used for multiple purposes.
The Hanging Crate was added in the Pre-Alpha 1.3.0 to accommodate the new joints added to the game. Hanging Crate unlike most objects is invincible to all sources of damage. It's intended to be used with joints to be suspended allowing as a swinging platform for players to utilize, as long as it isn't detached from its holder. This is known for being prevalent in the map Hazardous.