It used to be a popular hobby down the decades in the past century and still is.

Researching family history is an extremely popular hobby, now more than ever.

The keeping of fish in an aquarium became a popular hobby and spread quickly.

The society has helped make bird watching the popular hobby it is today.

Today fishkeeping has become a popular hobby that almost anyone can do.

In recent years, pin collecting has also become a popular hobby.

Bird watching, for example, is a popular hobby of adults.

Keeping an aquarium is a popular hobby around the world.

Vandalizing property is a popular hobby for young and old.

Radio construction was, in the early years of broadcasting, a very popular hobby among boys.