What have you found in your car,while restoring it?

Last night I worked late on my 1963 Dart GT,correcting,previous owner attempt to replace U-joints.
When I finished ,I started cleaning the interior found rear seat up on right side,pulled seat out and found gas shocks for the front, brand new in the box.
My friend, Tim found a gold class ring when he removed his dash,sold it to fund more parts.
Wonder what things you found while restoring your cars?