"A survey of the number of possessions that collectors typically have showed that over half keep fewer than 50 objects in their collections, but 28% had 100 or more. The largest collectors were men in the age range of 18-25 years old. Although this doesn’t seem like a huge percent, Nordsletten and Mataix-Cols pointed out that in order to display these collections, it’s often necessary for collectors to take up a significant amount of their living space. One collector, they noted, had only 10 objects in his collection, but they were tractors.