I have a friend, who I just learned not so long ago, likes to collect hotel promotional pens. Together with his kids and wife, they will search for available pens as soon as they reach their rented room.

There are people who are into collecting things as a form of a hobby. As for me, I can only think of keeping digital photos on my cds and laptop. I try as much to minimize the things I need to keep and organize, hence my disinterest in collecting things.