Some people collect baseball cards.
I collect board games. Over 250 games are neatly stacked, by manufacturer or box size, on shelves and racks. If I kept every game I've ever purchased over the past 35 years, there would probably be well over 3,000 in my home. I also collect people who share my obsession. The Internet has made it relatively easy to locate and befriend board-game enthusiasts from around the world.