You will need to purchase an Arduino Board.  I have listed a couple of places to purchase them.

Amazon: LINK Aliexpress: LINK

Speaker we will be using.

Amazon: LINK

Ok, so you have the Arduino Nano.  How are we going to run it?  With 3.7v Rechargeable Lithium Batteries.  We need to add   

Aliexpress Battery: LINK Charger Board: LINK

Buttons, buttons.... who has the button?  Here is a link to buttons I use for the Arduino Boards.  The are about $15.  Follow the link below to purchase them.

Amazon Buttons: LINK

You can use normal screws from Home Depot or Lowes but I recommend purchasing Knurled Nuts and Screws.  I just think they last a lot longer and easer to take things apart and put them back together without destroying your 3D Prints.  The screw will be 2mx10.

Aliexpress: LINK

This little device is where we will be storing .mp3 sounds on an SDcard and programing the Arduino to play sound effects when a button is pressed.

Amazon MP3: LINK

This is the LED we will be using.  The four pins are Red, Ground, Green & Blue.  Make sure when buying the LED it's GROUND not 5V.  If you buy the one's with the 5V, the other pins will be negative.  You can get them to work but the color code will be opposite and instead of using a ground you would use the 5V pin.  FYI. 

Amazon LED: LINK

Switch we will be using to turn the Arduino on and off.

Amazon Switch:LINK

Quick connect for the ST-Phaser 1 to connect to the ST-Phaser 2.  This is optional if you don't want to 3D Printer the Phaser 2.

Aliexpress: LINK Amazon: LINK