Having the following xaml:

<ItemsControl ItemsSource="{Binding yourDataList}">

<ItemsControl.ItemsPanel>

<ItemsPanelTemplate>

<Canvas/>

</ItemsPanelTemplate>

</ItemsControl.ItemsPanel>

<ItemsControl.ItemContainerStyle>

<Style TargetType="ContentPresenter">

<!-- position "over head" -->

<Setter Property="Canvas.Left" Value="{Binding Position.X}"/>

<Setter Property="Canvas.Top" Value="{Binding Position.Y}"/>

</Style>

</ItemsControl.ItemContainerStyle>

...

</ItemsControl>

Then put 1 of the elements in the ItemsSource on Noesis::Point(-FLT_MAX, -FLT_MAX), the canvas will expand to -FLT_MAX*2 but be capped on -FLT_MAX and it'll move x and y to -FLT_MAX so outside of the screen.
This will result in nothing being rendered to the screen.