This example shows a hand-drawn smiley face constructed from reusable React components, including a yellow circle background, symmetric eyes, and an arc-based mouth. It emphasizes component composition with React fragments and props for customization. The visualization uses React 17 with SVG rendering, and the mouth path is generated using D3’s `arc()` function. A separate Pie chart from `react-roughviz` is also rendered, using data labels and values with custom colors and rough styling, though the smiley face is the primary focus.