Here is something I have learned about unstructured time this holidays:
It is important and I believe strongly in providing regular unstructured time, HOWEVER, there is such a thing as too much of a good thing. Kids, in my experience, get silly with how they spend their time if it is all left up to them. For example, a child with too much time on their hands may, let's say, decide to play doctors with the cat. The perfectly healthy cat. Can I just say I am unconvinced of the therapeutic value of giving a cat 'injections' with rusty nails.
*No cats were permanently harmed in the making of this post and said child now has a few extra chores around the house to keep idle fingers busy!*