Crates were large wooden boxes used for storing various items.
Monkey Island 2: LeChuck's RevengeEdit
The address read:
To: The Ghost Pirate LeChuck c/o LeChuck's Island Getaway and Spa. Contents: Misc voodoo supplies.
He spent five days in the crate, along with a number of live snakes, with only bat lungs and eel bladders for sustainance before it finally reached its destination at LeChuck's Fortress.