title: How to import 2d Objects to scene 3d in unity3d
body: <p>I am beginner in Unity3d, I have a game is creating with Scene 3d. I wanna import 2d objects (picture cartoon with *.jpg or *.png) to the Scene 3d in order to save performance. How to do this ?</p>
  
  <p>More detail: My game is 3d but i don't wanna use all objects in game with 3d Objects to save performance. For some objects, I like to create 2d object (pictures) such as money, paper, leaf...Which best way help me to do this???</p>
  
  <p>Thanks.</p>