Building a simple diagram editor is a great way to bring together the core concepts you have learned so far with Konva.js. A basic diagram editor should allow users to add shapes—such as rectangles and circles—to the canvas, drag these shapes around, and connect them with lines to represent relationships or flows. Additionally, users should be able to select shapes for editing or deletion, giving them control over the diagram's structure and appearance. These features are foundational for many whiteboard and diagramming applications, enabling users to visually organize and communicate ideas.