The lightning talk is about programming the Raspberry Pi Pico microcontroller board with the CircuitPython programming language to emulate a keyboard or a mouse. It presents three tiny examples with a dozen lines of source code or less and emphasizes their simple program structure: initialization and processing (in an infinite loop or a sequence of statements); it also explains how to use the CircuitPython’s Human Interface Device (HID) module. The source code of program examples and the presentation are available in my GitHub repository: https://github.com/kruno-peter/pico-keyboard-mouse/