My family lived in a particular house from the time I was about 5 to when I was 14 and a half. This house had a very large back porch. Underneath that porch was all sorts of stuff, but mainly landscaping timbers. Most were 6 or 12 inches long, but a few gems were about 18 inches. They were about as big around as a loaf of bread.
Andrea and I used to spend HOURS playing with those. We'd crawl under the porch to retrieve them, then use them to build log cabins for our Barbies and corrals for our horses and all sorts of other stuff, then shove them back under.
I was just recently talking to Mom about this for some reason and she said that she used to think that was the most disgusting thing EVER. The under-porch crawlspace was dirty and nasty; the timbers were old and half-rotten some of the time (please note: We never played with the rotten ones; we tossed them aside) and so on and so forth.
Funny how things can look completely different depending on your perspective.