One of my favorite things is thinking about the life of discarded objects.
I'll be walking through the woods and find a Mountain Dew can from the 80s. Who left it here 40 years ago? What store did he buy it from? Who stocked it on the shelf? Who was the person who packaged it after it came off the production line? Who was the truck driver that dropped off the aluminum? Who was the miner that pulled the ore from the ground? What star did the elements come from?