Someone who collects bottles is often referred to as a "bottle collector." This hobby can encompass a variety of bottle types, including antique, vintage, or collectible bottles, and can involve different themes, such as soda, beer, or medicine bottles. Many collectors are interested in the history and craftsmanship of the bottles they acquire. Some may also engage in bottle digging, searching for old bottles buried in the ground.
Someone who collects beer bottles.
hoarder!
A numismatist is someone who collects coins and/or medals a numismatist
A jar collector.
A labeorphilist collects beer bottles.
Hey, I also heard, from a friend that someone collects plastic milk bottles and then gives wheelchairs in return, however that's all I know, I'm afraid
Someone who collects everything would be called a hoarder - this type of person may have OCD as well.
A Pencil Collector
An aquarist is someone who collects fish in aquariums. They can also simply be called fish keepers. Some collect a variety of fish, while others specialize in a few kinds.
A person who collects shells is known as a conchologist.
A teddy bear collector! jk, i didn't know there was one. A person who collects teddy bears is called an Arctophile.
Someone who collects pens?