It seems that alot of people collect one thing or another. Some things are more valuable than others, and some are less valuable. I'm thinking of one of our customers who collects marbles. He stops in from time to time to see if we have any. As you can see in the picture I found, marbles have beautiful markings and it's interesting to see all the different designs.
Others collect coca cola things.
What ever your taste, it's fun to go out and look for the things you love.