If you don't want complicated, then you might find using events will give you all you need. Check out
this tutorial by Busted Ed. Not only does the demo give you all the event commands, he also includes all the graphics you need. By definition, lighting scripts can get complicated to use because of all the factors that you need to take into account when mapping, etc.
I wasn't sure exactly what you meant by 'lantern effects'. If you mean those occasions when the map is basically very dark/black and there is a circle of light around the player which moves with them, then try Galv's Visibility Range script which you can get
here. Again he provides the graphic you need and it's very straightforward to use.