If you don't find exactly what you need, you may request a customized illustration.
Click the "Icons" menu, as if you were going to search for an illustration.
Look for the "Request an Icon" button in the lower left inside the menu where you search for illustrations.
Important: This is a service we provide for Mind the Graph subscribers. If you are a free user, we will take the suggestion and eventually included the illustration in the bank, but you cannot guarantee when.