Cool if it's actual trench art. Looks like a WWII photo frame I have. I have a nifty letter opener too -- small shell made to look like a scimitar.
Is that what that stuff is called? I have something very similar...just assumed it was home made by an aviation enthusiast...no idea when it was made (I assumed the late 40's). It has shell/bullet parts, a vintage bakelite toggle switch, and the bulb (which is blue) has a very strange base size...can't fine any like it...I assume it's from a vintage plane as well.