The pico-mac-nano is a tiny functional Macintosh replica created by 1-bit rainbow using a Raspberry Pi Pico microcontroller and a 2-inch LCD screen.It runs an emulated version of the classic Mac operating system and supports USB keyboard and mouse with an included USB splitter cable.1-bit rainbow sells the pico-mac-nano for £56, but it is currently out of stock due to high demand after being featured on tech blogs.Interested individuals can create their own replica using the freely available pico-mac code and 3D-printable case files on GitHub.