Ring in the New Year with a fun countdown clock that plays Auld Lang Syne! Doubles as a light-up party favor and noisemaker!
Use a Circuit Playground Express and stuff in your kitchen to build your own sound-activated snow globe.
Build a working safe that uses the Circuit Playground Express as the dial to unlock a servo controlled safe!
Use the accelerometer tilt to control lights and sound on this fun flying saucer made with CircuitPython
During your Circuit Playground Express into a remote control. Or control it using an IR remote control