One of the first shapes I tried in appliqué was the handprint. It's a cool shape because it's so recognizable and unique. My son's handprint and my daughter's handprint are so different.
Handprints are also a joy to work up in appliqué. They are small and flowing, with smooth curves and inside corners. I made a ton of these for family, of family. One of these designs that keep on giving and growing. Hands are pretty important after all.