An alarm clock where you have to play a game of Simon Says to turn off the alarm.
My own development board based on the chip ATtiny3217.
My own Hackpad with an OLED display, rotary encoder, and 6 keys. The firmware is done in PadeXa, my other project.
Its personal site made in my favorite style, It has everything that I need
Operating system coded in micropython made for Raspberry Pi Pico family
Open source firmware and PC app for you HackPad
USB - like device that can work as storage USB but its powered by rp2040 has it own SD card slot