Using genuine museum collections in a children's museum

Hi all,

As we know, children's museums aren't true museums.  They are more informal learning playhouses under the guise and organizational structure of a traditional museum.  They also don't typically have collections being studied, conserved, exhibited, etc.  However, that doesn't mean this is out of the question, just not likely. 

I'm curious to know if any of you have seen exhibits or programs in children's museums that incorporate actual museum collections?  At the University of Colorado, Boulder's museum of natural history, they have a small children's corner with actual animal bones from the collection on display that kids can touch (I believe they are secured to a tray and thus cannot walk off).  I believe they were bison, elk, and maybe moose bones, which the museum likely has large numbers of and can part with easily.  Besides this, I haven't really seen or heard of other examples where the children's museum includes real collections in their exhibits or programs. 

I'd love to hear about any you've seen or heard of and how they went about it, or concepts about how to do this.

Thanks!