I forgot that I was working on this post back in June, when I was showing my Disarmed installation at Flynndog. All the pieces in the installation lacked arms, and were suspended from the ceiling. The shadows were pretty cool. You may notice that some of those pieces got repurposed for the All Aboard exhibit (particularly the largest one, which got arms, used for leading a fish...).
I did some nosing around on the internet looking for other artwork that used the "disarmed" idea, and found this fabulous one called Disarmy Men, by Blake Fall-Conroy. He bought bags of plastic soldiers, removed the weapons, resealed the packaging, and replaced them on the shelves. Soldiers without guns!