The Sikki grass work of Bihar involves making:

Baskets, boxes, and decorative items
Embroidered textiles
Stone carvings
Metal jewelry

The correct answer is: Baskets, boxes, and decorative items.

Sikki grass is a type of grass that is found in the state of Bihar in India. It is a long, thin grass that is used to make baskets, boxes, and other decorative items. The grass is first dried and then dyed in a variety of colors. It is then woven into intricate patterns to create beautiful and unique items.

Embroidered textiles are made by sewing thread onto fabric to create a design. Stone carvings are made by cutting or carving stone into a desired shape or design. Metal jewelry is made by melting and shaping metal into jewelry pieces.

Sikki grass work is a traditional art form that has been passed down for generations. It is a labor-intensive process that requires a great deal of skill and patience. The finished products are often very beautiful and are prized by collectors.