Atheists do not like to be looked upon as foolish. So, I use "the builder built the building, and the painter painted the painting, and the creator created creation" argument with them. But when I say it, I make sure to point out the foolishness of those who think that a buidling could build itself.
This is what I say: (The unbeliever in red)
You: I can prove to you within 40 seconds that there is a God. - How?
You: See that building over there, how do you know that there was a builder? - Because the building is there. You can see it. Someone built it.
You: Yes. And if I were to say that the building fell together by itself, you would call me an idiot. It’s impossible for it to fall together by itself.
You: Now, imagine I had a painting in my hands, and it is over 400 years old. You and I have never seen the painter, he died hundreds of years ago. How do you know that there was a painter? Because you can see the painting.
You: Yes. And even if the painter died hundreds of years ago, and you never saw him, you still know that there was a painter.
Now, by using the same logic, if you look at creation, so all the stars and the moon and the sun, the clouds, seasons, flowers, trees, birds, cats, dogs, cows and all the living creatures, you must say that there is a creator.
Just as your eye saw order and design in the building and the painting, you see order and design in creation. Order and design are signs of intelligence. It's absolutely scientifically impossible for creation to create itself. Just like it would be foolish to say the building fell together by itself, likewise, it is foolish to say that creation fell together by itself.
So, if the builder built the building, and the painter painted the painting, then the creator must have made creation.
Once I have said this to an atheist, most will say, "Well there had to be someone who built it" You can then start to discuss who built it and then lead them to the Gospel.