It was a cold, wet rainy day today. So I challenged the boys to see if they could make a tunnel that ran the length of our unit. To do that a fair bit of ‘figuring out’ had to be done. At the end, we’d used every sheet and tablecloth we owned along with all our bulldog clips. My son had a blast and it was a really fun way to spend some quality family indoor time. Now I’m scratching my head to think of similar challenges. Ideas?