They're like what you're body is made up of. They're very very tiny, but they perform a bunch of functions. They're like the bricks to your building.

[ She takes a breath and thinks. ]

I mean, it's Santa's sack of goodies right? What if it was next to some little boy's desired stink bomb? Or, what if it was next to a bunch of dirt for some person's garden! You just never know so you have to be careful!