What is the easy way to set spacing between items in StackPanel?

Question

Is there an easy way to set default space between items inside StackPanel so I\'ll don\'t have to set Margin property on each item?

Answer 1

I use a transparent separator, which works well:

You can of course use margins but then if you want to change the margins you have to update all of the elements.

The separator can even be styled in a static resource.

An attached property could do it too but I think it's overkill.