Over the past 25 years, Tom Cox has grown Golfballs.com from a startup that sold used golf balls found in lakes to a world leader in the online sale of customized golf products – most notably, new golf balls. Golfballs.com now exceeds $33 million in annual sales, with 80% of its business customized in some way.

The start of a new decade brings the second installment of the National Golf Foundation’s Top 100 Businesses in Golf initiative, an effort that highlights the vitality, size and diversity of the $84 billion golf industry.

The equipment industry is the most commercially visible sector in golf, with clubs and balls accounting for an almost $2.9 billion annual market that’s driven by golf being one of the nation’s leading participation sports.

NGF research shows that approximately one out of every 10 people in the U.S. expects to purchase a golf-related gift for a friend or family member this holiday season.

NGF research finds that almost one in every 10 Americans plans to purchase a golf-related gift for a friend or family member during the holiday season. While golf balls account for more than half of all golf gifts, here’s a look at some other unique ideas.