ImplicitAnimationsWrapPanel.xaml

<Page
    x:Class="App3.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App3"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
    xmlns:animations="using:Microsoft.Toolkit.Uwp.UI.Animations" 
    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <GridView Name="WrapPanelContainer"
                  IsItemClickEnabled="True"
                  ItemsSource="{x:Bind Items}">
            <GridView.ItemContainerStyle>
                <Style TargetType="GridViewItem">
                    <Setter Property="animations:Implicit.Animations">
                        <Setter.Value>
                            <animations:AnimationCollection>
                                <animations:OffsetAnimation />
                            </animations:AnimationCollection>
                        </Setter.Value>
                    </Setter>
                </Style>
            </GridView.ItemContainerStyle>
            <GridView.ItemTemplate>
                <DataTemplate>
                    <Grid Height="100" Width="100" Background="Red"></Grid>
                </DataTemplate>
            </GridView.ItemTemplate>
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <controls:WrapPanel Background="LightGray"
                                        VerticalSpacing="5"
                                        HorizontalSpacing="5"/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </GridView>
    </Grid>
</Page>

Awesome!