Another interesting art form I didn't know existed...
Creating decorative objects from weapons of war as mementos or souvenirs is a practice that is probably as old as warfare itself. In recent years, this form of art has become highly collectible and is frequently called "Trench Art" because of the marvelous works created during WWI by soldiers passing long, fearful hours in the dangerous trenches along the front lines.
However, many cynics think it was all made in the 1920s by enterprising French and Belgian citizens...