Mountain as a birthday present

What would you give to a close friend who already has everything? The friend, who also happens to be your next door neighbor, is reaching an esteemed age of full 100 years later this year. She already has plenty of material goods, so she doesn't need any more stuff to put on top of the mantelpiece. She has also accumulated a wealth of immaterial possessions over the years. One thing that she doesn't have yet though is a proper mountain.