Building a notification system in an app. Each type of notification has it's own icon.
Within the app a concept of "Recommendations" is being developed. Person A can recommend an item to person B.
What icon could be used to represent this notification? The item could be anything, but is most likely a product to buy.
Cannot use a thumbs up as this is used for the concept of "likes".
Is there already an standard icon for this concept of recommendations?