A friend of my nephew found a rather large number of really big chunks of petrified wood and one very large agate (I want to say 50 pounds?) somewhere in Oregon. He posted pictures on his YouTube channel, and the Smithsonian Institute made him a member of some sort.
About 40 years ago I stayed in a hotel (more like an apartment) in Tucumcari NM, and it had a courtyard filled with fossil tree stumps. I wasn’t expecting that. ;^)