Two Bel Air Girl Scouts, who are also twin sisters, are among those turning the concept of a Little Free Library into something a little different.

Their Silver Award service project used the familiar wooden-box prototype. Instead of books, however, Claire and Alice Hartley’s library at Rockfield Park houses golf discs (driver, mid-range and putter sizes, as well as a shelf for lost-and-found discs), in line with their passion for the Frisbee-based game of disc golf, the Town of Bel Air said.

It’s a sign of the new diversity of Little Free Libraries, which have become a common sight across the country and offer a space for neighbors to trade items, such as books, with each other. They are also often a showcase for their owners’ artistic creativity.

Not only can everything from a grandfather clock to a Baltimore Sun newspaper box serve as a container, but the little boxes now often hold more than books.

Perhaps the largest spin-off is the “Little Free Pantry” movement. The boxes offer small amounts of community necessities, food, hygiene supplies, and the like. Launched about a decade ago, there are now at least 2,000 sites nationwide.

In 2017, a 10-year-old Carroll County girl was recognized for launching a Little Free Pantry at a Hampstead church. Makenzie Greenwood was the youngest person at the time to get the William Donald Schaefer Helping People Award.

Another trend is that of “Little Free Art Galleries,” featuring mini-museums and quirky exhibits. (There are reportedly several throughout Maryland, )

Mary “Uncustomary” England — a brightly-hued Baltimore entertainer who’s perhaps best-known for the Bubble Parade — built a “Treasures & Trinkets” little library inside an abandoned Maryland Lottery box she found.

Meanwhile, a Parkville resident created a “little library” for dog sticks, where dog walkers could take a stick or leave one.

And, a Dundalk pet pantry, providing pet food and other supplies, that was launched a few years ago has since expanded to Canton.

The Bel Air sisters who designed the new disc-golf library were recognized by the Town of Bel Air for their creativity.

The Patterson Mill Middle School eighth-graders often use the Rockfield Park golf course. Claire Hartley explained: “I wanted to do something for my Silver [Award] project regarding disc golf,” according to the town.

Alice Hartley also told the town that she is “really happy with the way it turned out, and I’m happy that people get to try a new activity.”

Bel Air Mayor Paula Etting gave them recognition certificates and challenge coins, saying she’s “very impressed with what you have accomplished.”

Have a news tip? Contact Bryna Zumer at bzumer@baltsun.com, or on X as @brynazumer .