Building sets are collections of interlocking pieces, often made of plastic, that allow users to create various structures and designs. These sets can include blocks, bricks, or other components that fit together in different ways. Popular brands like LEGO and Mega Bloks offer themed sets that inspire creativity and imaginative play. Building sets are not only fun but also educational. They help develop skills such as problem-solving, spatial awareness, and fine motor coordination. Many sets come with instructions for specific models, while others encourage free-form building, allowing users to explore their creativity and engineering skills.