what items can characters find from humans?

broad question is pretty much the title. in a more specific sense, the size of the object.

can they find abandoned campsites? small objects like a toothbrush? large objects like plane debris from a crash? none of these would include interaction with any humans, just finding the remains left behind from them.

sorry if this was already addressed somewhere, i did not see anything on it.

Hey @Andrealphus, sorry this hasn't received a reply until now! Our Guidebook mentions mentions that there is no human involvement. In the past, we've made the rare exception for discovering manmade objects. If you would like to discuss specific ideas further, you can drop a line in Contact the Staff. :)