Best Practice for Simple Webpart/Widget without needing code behind

Hey all. It seems a common task sometimes to need to create a simple widget that takes a handful of parameters and spits them out in a specific way. In this example i have a banner image widget that takes a link, description, and 3 images (large, medium, and mobile), and just spits it out in a certain format.

What's the best way of going about this without needing to create code behind files and such? I have 'hacked' it in the past by making a widget from other webparts, and 'reusing' fields (or making a web part with a blank layout) and then setting the Widget Container to a container and putting the 'transformation' in the container.

Example Web part Layout acting as a transformation:

<li>
  <a href="{%if(Url.Length == 0) { return "#"; } else { return Url; }#%}">
  <img class="desktopShow" src="{%LargeImage%}" alt="{%Title.Replace("\"","''")#%}" />
  <img class="mobileShow" src="{%SmallImage%}" alt="{%Title.Replace("\"","''")#%}" />
  <img class="IpadShow" src="{% if(MediumImage.Length == 0) { return LargeImage; } else { return MediumImage; }#%}" alt="{%Title.Replace("\"","''")#%}"/>
  </a>
 </li>

Is there something already in Kentico that does similar? Is there a way to easily call the Web Part Fields from the Web Part Layouts (i can make a widget with a preset layout then)? Just looking for what would be best. Thanks!