Unity free Shadow shader

Hey guys! You know how Unity pro has shadows? I have Unity Free, so there’s no way to get shadows. But, do you think there’s a shader that might make cool shadows. If there is, I want to use it for my player model, mobs and buildings. You know, one that can be used for anything. Do you have any suggestions? Thanks!

http://forum.unity3d.com/threads/102079-Dynamic-shadows-in-Unity-Free-Pro-possibly-Mobile