That sounds adorable and tech‑savvy! I’d start by listing the core parts: a soft, breathable fabric shell, a flexible LED strip inside for the lighting, a small speaker for sounds, a battery pack, and a microcontroller like a Teensy or ESP32 to run the code. For the mood detection, we could use a tiny temperature sensor, a piezo for subtle vibration, or even connect to a phone’s accelerometer and heart‑rate data through Bluetooth. Then we’d write a quick sketch that reads the sensor, maps the values to a color palette and sound set, and outputs to the LEDs and speaker. On the comfort side, we’d use a plush filling that’s washable and give the plush a weighted core for that extra hug feel. I can sketch out the circuit diagram and the basic code structure if that helps. Just let me know what sensors you’re leaning toward and we’ll tweak the plan!