These are not a necessity to have but are definitely a great addition! I too own a shop and I really love to have physical items to display with more product information available for my customers. With this little package you will get a display diffuser bottle (it just has water in it for display purposes) and a two sided card stock paper info sheet (approx 4.5 x 6") with information on what the diffusers are and instructions on using them. You can lay the card flat in front of the diffusers or if you prefer - put it in a stand to display. (stand not included)