If you enjoy these project, then I encourage you to buy my book, Rubber Band Engineer. It's full of more awesome and original projects crafted from household hardware. You can find it wherever books are sold.
We've all heard of the classic egg-drop engineering challenge, so here's a twist: crash test race cars! The students in my extracurricular engineering class love this project because of its open-ended nature and thrilling process.
More footage of crash tests