This is my version of the Terran Empire Dagger seen in the episode "Mirror, Mirror". Built out of poplar wood. It's 12" overall with a 7" blade.
On a related note, Poplar wood is terrible for thin pieces and breaks easily. I dropped this on the grass and it broke. Not at the joint though. The joint held. Due to how fragile this piece is, I didn't finish it as good as I had intended.