There are various padded appliques types that are available in craft stores. These appliques come in various shapes and colors such as; flowers, animals, ribbons, etc.
My favorite ones are felt appliques because they have soft and hairy surface, almost like velvet.
Meanwhile, satin padded appliques are commonly used in making bridal accessories because they are shiny and look attractive. I rarely see them used in kids accessories such as hair bandanas or clips.
For kids, many people use the felt or cotton padded appliques because they have more shapes and colors. The calm but attractive colors such as bright red and yellow are more suitable for kids than shiny satin fabrics.
Other materials of padded appliques that I know are sequins and PVC. Sequin appliques are not suitable for making accessories for small kids because there’s always a risk of loose of tiny sequins.