I think Ross Zietz would make a great uncle if he is not a father yet. He is able to dispense useful advises just with his t-shirt designs.

He can get his nieces and nephews, or better yet, get his siblings to buy them his "Strength In Numbers" t-shirts and tell them not to fight as they can join forces to gain whatever it is that they aim for.

Then he can remind them to start looking for birds of a feather with this design...



...to gain the support they need.