WildStar fans who bought Deluxe Edition, and those who logged into the game every day during pre-order weekends as well as Open Beta, can collect bonuses and Boom Boxes from account bag, located in the bottom left corner of your screen. It’s a little present icon with a number on it. The number represents the quantity of Boom Boxes.
Boom boxes are account bound. When you click on the box, a pop up window will ask you are you sure you want to bind this to your character. After confirmation, a boom box will appear in your inventory. Just right-click on it and take your reward. You can open one box per day because there is a cool down of 21 hours. Rewards are random, and the first reward for my character was Pink Fury Dye.