All of these are on the lowest setting, which gives you a cool effect like this. Boom! But it doesn't have to go just to the straight line. You can set them up like this in sort of a triangle. Beyond that, you can play catch with yourself. You can mix up the power settings in between the catapults. You can go for really long drops. Make your way up the stairs. Bouncing it off walls. You can include other objects in your chain reaction. This is often called a Rubegoldberg Machine. So you'll tweak it and fine tune it and you'll learn from that like a good engineer. And eventually you get it right and you taste that sweet success.