The Beer Box

List of materials

1. Foamcore
   
2. Particle Argon#3
   
3. Servo Motor
   
4. Neopixel
   
5. Red and green LEDs
   
6. Amazon Echo
   
7. Beer(the trophy)
   

The Beer Box uses a servo to lock the box. When riddle #2 solved, the Beer Box will be activated. The Neopixel Ring inside the box will glow. The Box is connected with an Amazon Alexa command using IFTTT. And there is an Amazon Echo set onsite. The player can open the box after figuring out the answer and trigger the "unlock" event by saying the answer to Alexa.