Knapping is a technique with which the conchoidal stones are shaped into different objects and forms. Conchoidal stones are a category of stones that have no specific plane of fracturing, upon hitting it. The category includes quartz, cherts, jasper, silica etc. The stones resulting from knapping are used for the construction of facing walls, for making stone tools, and other decorations. Making statues out of these stones can also be added to the category.

Knife making is the collection of different techniques to make knives. It includes stock removal method, forging to shape method, welded lamination etc. Different metals are used for making these knives majorly from the families of carbon steel or stainless steel. There are different steps, including blade-making, heating, grinding etc. to complete one knife. Hobbyists love to make different beautiful knives in their leisure time.

Knife throwing is a term for many. It is an art using which the throwers throw his knife to some target. The activity has recently come up with entertainment purposes where knife throwing shows are organized. In past times, it was an important combat skill that was used in fighting, in the wars of swords.

Knitting is a famous hobby in which the fabric yarn is knitted to make a complete piece of textile. The activity is very slow and involves minute knot makings, which at the end, result in a textile. Knitting is of both types; either by hand or by machine. But hobbyists usually prefer to knit by hand during their free time. There are different structures that are made by these knitting experts.

Knot tying may not seem enough interesting thing to be a hobby. But there are a number of different knot tying techniques, so much that they have become a separate hobby where learners learn and do these knots. There are hundreds of tutorials over the internet; that teaches about how to make different knots for different purposes.

Kombucha is a tea that people have been fermenting for a long time. The tea has the health benefits of normal tea as well as it also contains some rich bacteria and antioxidants that are useful for your health. It takes 7 to 30 days for brewing kombucha. The more time of brewing gives the product with less sugar and more flavour. You can make Kombucha at your home, by following different home techniques and measures.

Korf Balls is an outdoor sport that involves two teams to play against one another. Each team has eight players out of which four are females. The game very much resembles basketball, and every team has to make the maximum number of goals by throwing the ball into a netless target which is placed at the height of 3.5 meters.

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Krav Maga is a military and defence training that involves a blend of different boxing, judo, wrestling and karate techniques. The core purpose of Krav Maga is to protect yourself from any physical attacks during a fight. The practice is started by the Israeli forces to train their military, also known as Israeli Martial Arts.

Kung Fu is a fighting style based on Chinese martial arts that is famous with different names like wushu and kuoshu. The fighting style is very famous all over the world and is adopted as a hobby by many of the people out there. The style comprises hundreds of attacking techniques that have its root in Chinese history and philosophy. One can master only some of those techniques at a time.

Kyokushin is a blended style of fighting that has its origin from Korea and Japan. The style is also called stand-up fighting. The word ‘kyokushin’ is derived from Japanese, which means ‘ultimate truth’. Different philosophies of self-improvement, discipline, and hard training are associated with this particular style of fighting. The style is becoming famous all over the world, and there are different Kyokushin centres that help the hobbyists and enthusiasts to learn this style of fighting.