Click the button to get a quantum random bit (zero or one, red or green). Another version of you in another Everett branch will get the other result. What you do with that is between you and other-you.
Every day, we retrieve 16384 bits from the ANU Quantum Numbers service. These bits are generated by measuring background vacuum fluctuations using a quantum optics setup known as homodyne detection. When you click the button, we choose a random one of those bits and display it to you. (The randomness of which specific bit the server shows isn't quantum randomness, but the result—whether the bit is 0 or 1—is.)