what is scout's initial reaction to finding the soap craving?

She is excited and inquisitive.

Scout wants to take it, but Jem thinks it might be someone’s hiding spot and they should leave it alone.

Also, Scout throws them on the ground, thinking about voodoo dolls, but Jem rescues them. They try to figure out who might have made them, but can’t think of anyone with both the skill and the desire to do so.