We had an eccentric neighbor when I was growing up and she had a pretty damn big bomb shell that looked like one of those as a garden decoration. I’d say it was 5-6 feet high, although the last time I saw it, I was a teenager, so it might have been smaller than I remember. Big enough for it to clearly have once been something designed to be dropped out of a plane and explode.

And she was kind of a hippie lady (I grew up in a place where a lot of hippies settled and never stopped being hippies), so I think maybe it was meant to be an anti-war statement?