You can make a LEGO scale building and test gravity, or build a LEGO vehicle to test how fast a standard car would pollute the air, or even, build a LEGO crane to use it as a scale to see how much a real crane could, and anything else you want to do. I am a smart LEGO builder. You can think of something else, I bet. I hope this was helpful. MAY THE BRICK BE WITH YOU, LEGO BUILDER! BE SMART ON YOUR PROJECT! :)