Groundhopping is a hobby that involves visiting and exploring different sports venues and stadiums. From football grounds to cricket stadiums and beyond, Groundhoppers travel around the world to experience the unique atmosphere, architecture, and culture of various sporting arenas. They collect memorabilia, take photos, and often document their experiences in blogs and social media. This hobby can also involve attending matches and events to witness different teams and sports in action. Groundhopping is an exciting and engaging hobby for sports enthusiasts and travel lovers, and offers an opportunity to discover new places and meet like-minded individuals who share a passion for sports and exploration.

Grunge music is a genre that emerged in the Pacific Northwest region of the United States in the mid-1980s. It is known for its heavy and distorted guitar sound, angst-ridden lyrics, and rebellious spirit. Grunge music often features themes of social alienation, political disaffection, and existential angst, which resonated with many disaffected youth of the era. Some of the most iconic grunge bands include Nirvana, Pearl Jam, Soundgarden, and Alice in Chains. Grunge music continues to inspire and influence musicians and fans around the world, and is a fascinating and engaging hobby for those interested in the history and culture of alternative music.

Guerilla gardening is a hobby that involves cultivating and nurturing plants in areas that are not typically designated for gardening, such as abandoned lots or public spaces. It is a form of activism that seeks to beautify urban landscapes while promoting sustainability and community involvement. Guerrilla gardeners may plant flowers, vegetables, or other plants, and often use creative methods to incorporate their gardens into the surrounding environment. This hobby can be a way for individuals to connect with nature and their community while making a positive impact on the environment. With its focus on creativity, sustainability, and community involvement, it is a hobby that can inspire individuals to learn more about environmental issues and take action in their local communities.

Guinea pig breeding is a fascinating hobby for those who love these adorable pets. It involves selecting the best breeding pairs, taking care of pregnant guinea pigs, and raising the babies until they are ready for their new homes. Breeders strive to produce healthy, happy, and genetically diverse guinea pigs with desirable traits, such as unique coat colors and patterns. This hobby requires a lot of patience, time, and knowledge about guinea pig care and breeding. Guinea pig breeding can be a rewarding hobby for those who are dedicated and passionate about these cuddly creatures and want to share the joy of owning them with others.

Guitar playing is a popular hobby for music enthusiasts and has been around for centuries. The guitar is a versatile instrument that can be played in various music genres, from classical to rock, blues, jazz, and pop. As a guitar hobbyist, you will learn to play different chords, strumming patterns, fingerpicking techniques, and music theory. You can also explore different guitar types, such as acoustic, electric, and bass guitars. Learning guitar offers a way to express your creativity, improve your mental health, and connect with other musicians. With the help of online tutorials, lessons, and practice, you can hone your skills and even perform on stage or record your music. The guitar hobby offers endless possibilities for learning and exploring music, making it a fun and fulfilling activity for all ages.

Gunpla model hobby, short for "Gundam plastic model," is a type of hobby where enthusiasts assemble and customize model kits of fictional mecha robots from the Gundam anime series. Gunpla kits come in various levels of difficulty and scale, from beginner-friendly snap-fit models to highly-detailed and intricate master grade models. Building and customizing Gunpla models allow hobbyists to showcase their creativity and attention to detail while also developing skills such as painting, weathering, and kit bashing. With an expansive variety of kits and accessories to choose from, the Gunpla model hobby provides a satisfying and engaging experience for both beginners and experienced modelers.

​Gun shooting, also known as shooting sports, is a hobby that involves using firearms to aim and shoot at targets. This sport involves a combination of physical skills such as coordination, balance, and stamina, as well as mental skills such as concentration and focus. There are different types of shooting sports including pistol shooting, rifle shooting, and clay pigeon shooting, each with its unique set of rules and techniques. Gun shooting enthusiasts can participate in competitions, join clubs, and even pursue professional careers. The hobby requires a great deal of discipline, responsibility, and safety awareness. For those interested in exploring this thrilling hobby, there are many opportunities to learn, practice and master the skills involved in gun shooting.

Gundam models building is a popular hobby among anime and sci-fi enthusiasts. It involves assembling and painting miniature models of the famous robots from the Japanese anime franchise Gundam. Hobbyists enjoy the challenge of putting together intricate pieces and creating unique designs, as well as the satisfaction of seeing their completed models on display. Building Gundam models can also be a form of stress relief and a way to express creativity. With a vast array of Gundam models available, from different series and at different skill levels, there is always something new to discover and build. This hobby can provide a fun and rewarding experience for those interested in building models and sci-fi enthusiasts alike.

Gun collecting is a hobby that involves the acquisition and collection of firearms. Gun collectors may collect antique or rare firearms, guns used in particular wars or conflicts, or simply firearms that they find interesting or historically significant. Some collectors focus on a specific type of firearm, such as handguns or rifles, while others may have a more diverse collection. Collectors often research the history and background of each firearm in their collection, and may attend gun shows or auctions to acquire new pieces. This hobby can be a way to appreciate the mechanical and historical significance of firearms, as well as a way to connect with other enthusiasts in the gun collecting community.

Gunsmithing is a unique hobby that involves the art and craft of designing, building, repairing, and modifying firearms. It is a hobby that requires knowledge of metallurgy, engineering, woodworking, and ballistics. Gunsmithing enthusiasts often begin by learning the basics of gun repair and then move on to more advanced techniques, such as customizing guns for precision shooting, creating bespoke firearms, and building custom rifles or shotguns. This hobby can be both rewarding and challenging, and it requires patience, dedication, and attention to detail. For those who are passionate about firearms and want to learn more about the mechanics behind them, gunsmithing is an excellent hobby to pursue.

​Gurning is a peculiar hobby that involves making an exaggerated and distorted facial expression while holding one's mouth open. This practice is said to have originated from the North of England, where it is often performed in competitions. The objective of the competition is to make the most grotesque or amusing face possible. Gurners are judged on their ability to contort their face in unusual ways, and the winner is crowned with the title of the best gurner. While it may seem unusual to some, the gurning hobby has gained a considerable following among those who enjoy eccentric and unconventional pastimes.

​Gymnastics is a thrilling and challenging sport that involves performing acrobatic movements, flips, and twists on various apparatus like the balance beam, uneven bars, vault, and floor exercise. It requires immense strength, flexibility, and agility, making it a complete full-body workout. Gymnastics is not only a fun and entertaining activity but also a competitive sport that is included in the Olympics. It promotes physical and mental fitness, as well as self-confidence, discipline, and determination. Anyone can start practicing gymnastics at any age, and there are various levels to progress through, from beginner to elite. It's a hobby that can be enjoyed solo or with a team, and one that can provide a sense of achievement and satisfaction with every accomplishment.

Gyotaku is a Japanese art form that involves using fish as printing stamps to create unique and intricate designs. This traditional practice dates back to the mid-1800s and was originally used by fishermen to record their catches. Today, Gyotaku is a popular hobby among artists and fisherman alike. The process involves coating the fish with ink or paint, carefully pressing it onto paper, and then removing the fish to reveal a detailed and realistic print. The result is a beautiful and detailed work of art that captures the unique features and characteristics of the fish. The art of Gyotaku is not only a visually stunning hobby but also a deeply cultural and historical one that drives enthusiasts to learn more and practice it.

Gypsy jazz is a musical genre that originated in the early 20th century and combines the elements of traditional European and Romani folk music with American jazz. It is characterized by the use of stringed instruments such as guitars, violins, and double bass, as well as the distinct rhythm known as "la pompe" played on the guitar. Gypsy jazz is known for its lively and upbeat tempo and improvisational style, making it a fun and challenging hobby for musicians of all levels. Whether you are a seasoned player or just starting out, learning to play gypsy jazz can be a rewarding and fulfilling hobby that offers endless opportunities for creativity and expression.