Collaborate. Grow. Smile.
Collaboration is people coming together. A flower fits to that in every way!

Solution

People joining in on a project, collaborating by bringing their unique skillset to the table is a beautiful thing. A flower not only represents this beauty but also fits the design of a network by it's shape. Having the cooperative petals grow larger than the others represents their gain. What other than the chance of growth and happiness through achieving a goal alongside chosen collaborators would make you wanna collaborate?