Froggyswife - I see from your avatar info that you live in Arkansas. One of my absolute dreams (crazy I know) is to get to Crater of Diamonds State park in Arkansas. I would be in *heaven*...sifting through dirt and maybe finding something that's actually valuable! Quartz(white, rose, pink, etc), kunakite (or whatever its called from southwestern Virginia. It's a pink/green stone from southwestern Virginia), beach fossils (sharks' teeth/pieces of shell/bone fragments), smooth "river" rocks...I'll pick it all up and bring it home. My big problem is that there's this stream not far from my house & it sometimes has the *neatest* looking stuff in it.
"Hi, my name is agnes! and I collect rocks."
"Hi agnes!"
But to the OP...however, I do *not* collect chunks of concrete. I do have some standards

.
agnes!