This prototype of a digital drawing tool features a pen and eraser, and has been developed in two versions, using Flutter and JavaScript frameworks. A unique interaction has been implemented, where upon selection of the eraser tool, eraser dust is visually dropped, providing clear indication of the currently selected tool. Additionally, when erasing lines, the erasure is performed in the opposite direction of the original drawing, adding an interesting visual effect of the eraser dust falling. This prototype demonstrates the integration of unique interactions and visual effects in digital drawing tools, enhancing user experience and usability.