How about make an LED alarm clock? Show us how to use Fritzing software (breadboard circuit, PCB etchable deign and exporting) Draw etchable deign with a 3D Printer(3d printer g code drawing export from Inscape) Programing Arduino (Find the correct I2C address and updating the DS3231 clock chip, and lastly program alarm date/ time with RGB color) if you need the Fritzing file let me know it has the code and schematics.