title: Simplest way to iterate over all GameObject childrens from a script at runtime
body: <p>In my <code>Unity3D</code> project I got a complex <code>GameObject</code> of a truck that his hierarchy looks like this.</p>
  
  <pre><code>+ Truck
     +FrontPivotPoint
        +LeftWheel
          Tire
          Rim
          Hindge
        +RightWheel
          Tire
          Rim
          Hindge
      +CenterPivotPoint
        +Body
          Arm
          Screw
          Pin  
  </code></pre>
  
  <p>Basically what's happening is I got a lot of complex parenting and I want to go trough every child and add to him a <code>RigidBody</code>.
  I think it should be something nested but I don't have something in mind.
  Any help would be appreciated!</p>