This is a trunk hewn from the living wood of the Underworld Tree. It only has one sticker on the side of it, which reads "Scenic The Underworld Tree." Somehow you think the "scenic" part is probably a bit of an exaggeration.
You try to open the trunk, but you can't find any hinges or opening mechanism.
The wood's still got some life left in it -- maybe it'll grow a latch in a few days.
Since Nov. 2nd, 2009:
You're pretty sick of trying to figure out how this trunk is going to open. In fact, you're pretty sure it's just a solid chunk of wood. You should just whittle something out of it.