I'll post pictures of my son, since I wouldn't feel right about posting other kids.
This is the first draft of his shelter and him posing in it. He picked a lot of grass and put it on the ground to get him off the dirt. It looked pretty good. He cut the trash bag open along the two sides and unfolded it to make one half of a roof. He used leaves and grass for the other side of the roof.
Looks cozy
After the first ridiculously heavy downpour for only 10 minutes, they all went out to examine their shelters, and he saw his was soaking wet inside. So he put a space blanket on the other side of the roof.
The shelter looked a lot better, and would probably keep him dry, except it was already wet inside. He earned his wilderness survival merit badge two years ago, so he was just doing this for fun. He was happy with his shelter but wanted to sleep in a dry tent instead. So he did, except his tent wasn't so dry either.
You'll notice caution tape strung up around the perimeter. We didn't want boys wandering out into the woods int he middle of the night, and we wanted to make it easy for the parents to check on the boys in the pitch dark without wandering around looking for them. The caution tape was a really good idea.