This is a great way to have something to give to your customers so they always have your name and number with them.
You always need bags, bags to put your customers products in. Bags for you, bags to give away.
Everyone has a cup now days, what a better way to get your name out in front of your customers and their friends.
USB plug...You can give your customers something they will use all the time, and they will think of you when using it.
Always a great way for your customers to remember you and your number. A key chain, or magnet works great.