I WISH!!! Nope, bottle rockets are not legal in Colorado. That's why I like your Nebelwerfer project so much. I cant build and fire one, but somebody should, it just looks too cool, so I'm glad you are building one.

A Calliope would be cool. I don't know if they mounted the Calliope on a halftrack, but it would be a fun paper panzer to build. I keep thinking of mounting a 75 mm in it, so it can be a 75 mm motor gun carriage M3, America's first tank destroyer, but for now it can just be an ammo hauler.