A Basic Scene With Models And Cubes

<!-- Battle Damaged Sci-fi Helmet - PBR by theblueturtle_
https://sketchfab.com/models/b81008d513954189a063ff901f7abfe4 -->
<m-model x="-2" collide="true" src="https://public.mml.io/damaged-helmet.glb" z="-2" y="1.2" sx="0.5" sy="0.5" sz="0.5"></m-model>

<m-cube id="clickable-cube" y="1" color="red" collide="true" z="-2"></m-cube>

<m-model x="2" z="-2" id="duck" src="https://public.mml.io/duck.glb" 
         y="0.37872010769124587" collide="true">
  <m-attr-anim attr="ry" start="0" end="360" duration="3000"></m-attr-anim>
</m-model>

<m-cube id="color-cube" x="4" y="1" width="1" color="green" 
        collide="true" z="-2" castshadow="true"></m-cube>

<script>
  const clickableCube = document.getElementById("clickable-cube");
  clickableCube.addEventListener("click", () => {
    clickableCube.setAttribute("color", `#${Math.floor(Math.random() * 16777215).toString(16)}`);
  });
</script>

Interactive web page -> https://mml.io/examples?example=Basic%20Scene