Since Fuse doesn’t yet have standard checkboxes and radio buttons, here’s a simple home-made checkbox UX. It extends the ToggleControl base class. You can save it in a file such as Checkbox.ux and then use it in ux as <Checkbox ux:Name="myCheckbox"/>
Note: I’m using fontawesome for the checkmark inside the checkbox (http://fortawesome.github.io/Font-Awesome/icon/check/)
<ToggleControl ux:Class="Checkbox" HitTestMode="LocalBounds">
<Clicked>
<Toggle Target="this"/>
</Clicked>
<Font File="fontawesome-webfont.ttf" ux:Global="fa_icons" />
<Rectangle Width="15" Height="15" CornerRadius="3" >
<LinearGradient StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0" Color="#f0f0f0" />
<GradientStop Offset="1" Color="#e0e0e0" />
</LinearGradient>
<Text ux:Name="checkbox" Font="fa_icons"/>
<WhileTrue Source="this">
<Change checkbox.Value=""/>
</WhileTrue>
</Rectangle>
</ToggleControl>