My patents would always bring rocks home from every place we visited. Lol....some were huge. I did find a piece of petrified wood in the mojave desert when just walking around one time with my parents.

When my grandparents lived in Topeka their neighbor was a school teacher. She knew a place around there to find fossils. Brought me several really good sea lilly fossels (crinoids) where I live now in Ky there are many arrowheads to be found around. I have a couple. Also my farm has tons of limestone rocks & I have sern some shell fossils in those rocks.

I actually had a rock collection growing up & had many I bought from rock stores usually in the desert area of calif or at touristy areas.