Is there a master-list of unused traps?
Koules: Unfortunately, it's in our twisted heads.
Have there been traps that were too complicated or just too bizarre to pull off?
Burg: When we get an idea and everyone agrees on it, it's like "Let's go." We figure out how to manufacture it.
Koules: I think production-wise, there's been some -- in this movie especially -- there have been ones that are a lot more complex to produce. But we've never bailed on one once we start it.
Burg: Our only rule is that it needs to be something Tobin would be able to engineer and build. We often say, "If he can buy everything at Home Depot for the trap, then we're good."
Do you think of this movie as the start to a second franchise?
Burg: In our minds, we have ideas. When we make a movie, we put a bunch of things in it and there are a lot of questions in this movie. If this movie is a success, we'll answer them in the next movie. In our mind it was 8, 9, and 10. We want to do three more. This is the first of another three.