How do I space out the child elements of a StackPanel?

Question

Given a StackPanel:

  Apple
  Banana
  

        

Answer 1

Grid.ColumnSpacing, Grid.RowSpacing, StackPanel.Spacing are now on UWP preview, all will allow to better acomplish what is requested here.

These properties are currently only available with the Windows 10 Fall Creators Update Insider SDK, but should make it to the final bits!