With my brother now having his own account (previously used mine) we are connected as a family in the accounts section. Anyway, I had wanted to send him an item, but we share one computer so I can't do that, at least not that I know of.
My idea was add a tab beside "Shared Bank" named "Family Bank". This bank would allow people of the same family to share items and such between each other. This would be incredibly helpful I think.