Stamps and coins are one thing. Collecting them can even make for a great past-time hobby. But for every American quarters collector, there’s a hobbyist collecting enough stuff to fill an entire room or even a museum. 

Jef Beck has the world’s largest collection of Ken dolls. His obsession spawned from a childhood memory with his sisters.  He owns enough to fill The Ken Room in his house in Cedar Rapids, Iowa. 

Bob Begley has the largest collection of bar towels, with 4,558 towels. For over 15 years, he has collected towels from all over the world.  

In 1989, Matt Malmgren put a McDonald’s hamburger in his pocket after purchasing it to save for a later meal. He forgot about the burger until he found it in his jacket pocket a year later. Amazingly enough, it looked and smelled exactly the same. Since no one believed him, he began collecting burgers. To prove a point about the preservatives in fast food, he now has the world’s largest collection of immortal Big Macs, double cheeseburgers and hamburgers from McDonald’s.

Niek Vermeulen from the Netherlands holds the Guinness Book of Records for the world’s largest collection of airplane sickness bags with 3,700 bags from over 800 different airlines. His favorite is a bag from a NASA space shuttle that spent 16 days in space.

The largest collection of traffic cones is owned by David Morgan from Burford, UK. He received a spot in the Guinness Book of Record in 200 with 137, but now has over 500. This 64-year-old man is not some drunken teenager with an obsession for pranks; he’s the sales director for a plastics company.  

This one kind is a little creepy. Joseph Lauher has the largest collection of handcuffs; some even date back to the Civil War. This guy must have some serious fetishes…