Quantity   Component name
1 × Billy the Bass https://en.wikipedia.org/wiki/Big_Mouth_Billy_Bass
1 × Amazon Echo Dot https://amazon.com/gp/product/B015TJD0Y4
1 × Audio Amp https://amazon.com/gp/product/B01FDD3FYQ
1 × ATTiny84 I used one attached to a PCB from a previous project: https://hackaday.io/project/25338-led-icicles
2 × N Channel MOSFET For controlling the body motors and the mouth motors
1 × Photoresistor Any photoresistor will do; they're all the same, mostly.
3 × 10k Resistor Various resistors, to be used to pull down the MOSFETs, and as a voltage divider for the photoresistor