Our work contest this year was to decorate a mini stocking. I
chose to add lights and music using Adafruit parts. The lights are
individual NeoPixel LEDs, the audio comes out of a mini speaker
(https://www.adafruit.com/products/1890) driven by a 2.5W Mono Amp
(https://www.adafruit.com/products/2130). The smarts of the stocking is a
Teensy board (https://www.adafruit.com/products/2756) running the OctoWS2811
library for the LEDs, the Audio library for the music (DAC output to the
amp), and the Snooze library (with one pin setup for capacitive touch
wake-up) for power savings. A 3xAAA battery pack was used for power. I
thought it turned out really great and it looks super cute.
Teensy 3.2 + header: Teensy 3.2 is a small, breadboard-friendly development board designed by Paul Stoffregen and PJRC. Teensy 3.2 brings a low-cost 32 bit ARM Cortex-M4 platform to hobbyists, students and engineers, using an adapted version of the Arduino IDE (Teensyduino) or programming directly in C language. Teensy 3.2 is an upgrade over 3.1! Teensy 3.2 is a drop-in replacement upgrade for 3.1 and can run any sketches designed for 3.1. (read more)
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.