Did you look at any of the specific puzzles? I guess some people might get them for kids, but most of them are the kind of thing you might have at your desk:
NFI - just something I bookmarked due to personal interest; he notes that they aren't carved and one idea I have is to embellish them with a litttle carving for details. I think of them as a craft that is just more interesting because it can be taken apart, not as a toy.
As far as the rubber band gun plan goes, I agree with you completely.
OTOH, I asked a guy who sold wooden swords, shields and bows/arrows at the Ren Fairre about the liability and he said he hadn't had any trouble and thought anyone who claimed not to understand the potential danger would get laughed out of court. I think he might be a bit naive.
But don't worry, I won't take it personal or sue you if you don't use my idea.
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