Most Honorable Number One Son had a project last year in which he was to construct a DNA strand. It was to be a three dimensional double helix with one full twist. Each compound was represented with distinguishing items, and all were linked together to form the strand.

While we did it with K'nex (which made for a damn tall model...but was ok, he told the teacher it represented his personal DNA...those of you that know of him understand lol), many kids used candy. Twizzlers and marshmallows were prominently featured. ha ha

Could this be an option? They could learn a very simply version of what DNA is, and use non-lethal materials to construct it.

__________________
Though I am different from you,
We were born involved in one another.

For it was not into my ear you whispered, but into my heart. It was not my lips you kissed, but my soul.

Complete surrender should not just come at moments in which one faces overwhelming odds, but in the calm when it seems one is personally in complete control of one's life.