what means kitbashing?

Well guys, first at all, I am going to explain what the hell is kitbashing:

Kitbashing is a practice in which a new 1/6 scale model is created by combining elements from existing, commercially-available model kits; these elements may be added to an existing base, or to each other. Both hobbyists and commercial modelmakers do this; in the latter case, it is particularly popular for creating concept models, and also for detailing motion picture special effects.

Most of the modeling work is done on posable figures made of plastic. The average 1:6 figure stands roughly 30 cm (12 in) tall, representing a 1.8 m (6 ft) tall human.
Figures can be outfitted in a wide variety of mass produced, limited production, and custom clothing and items. Some people undertake vehicle projects ranging from tanks and helicopters to sand rails and jeeps. Talented "customizers", hobbyists specializing in construction of one-off and limited production items or the extensive modification of stock products, are limited only by their imagination.
The primary focus of most modelers is military subjects of many different eras, but some modelers focus on science fiction, fantasy, pop culture, or civilian topics. There are many ways of participating in the 1/6th scale hobby, ranging from simple collecting to the accurate modeling of entire military units.
My favorite figure comes from the series Dragon.
In 1987 Dragon Models Limited (DML) entered the 1:6 scale figure market with a German World War II figure named "Hans". Dragon figures were held in high esteem by collectors due to their both high quality and accurate products. Dragon Models Limited (DML) continues to produce high quality items, and they currently release several figures each month. Their main focus is WWII German, but they have released figures from the Vietnam War, the Falklands War, Korean War, both the first and second Gulf Wars, and the U.S. invasion of Afghanistan. They have released few vehicles, three styles of German Kubelwagen jeeps and a German motorcycle, yet are producing heavy weapons such as anti-tank and anti-aircraft cannons.