STORING USB STICKS
I used velcro to store the USB sticks in my glove box by attaching the caps of the USB drives to the door of the glove box. Then I can just pull out the individual USB stick whenever I want to play different music. I created a "greatest hits" USB stick with all of my favourite songs to play on random (sorted into folders by artist), and a couple of "albums" USB sticks which have full albums for the times I want to listen to the whole album in order.
Note: that is 40GB of storage shown: one 8GB stick and 2 16GB sticks. Can hold approximately 8000 songs!