Fusible glass frit, stringers, noodles, etc., that have a coefficient of expansion (COE) of 90.
Many of these items are Fuseworks products, specifically designed and tested for use in the Fuseworks Microwave Kiln. The Fuseworks products are ideal for your small fusing project. Cut a 2" x 3" sheet of glass into the desired shape, then add bits and pieces of colorful embellishments, place into your kiln (per instructions) and easy-peasy, you've got a unique work of art. Or at least a unique *something*.