Hi! Thank you for reading and (hopefully) responding. I am really desperate right now. For my science fair project, I need to build something that works or does a task. Last year my friends built a linear accelerator and someone else built a potato gun. These are things that work. I desperately need ideas. I know I'm lazy and stupid for waiting until the last minute, but I couldn't think of anything. I have until this Friday to get it done. My dad has a garage and a lot of tools and spare parts to mess around with, and I have money if I need to buy anything, although I would like it to be inexpensive. Please tell me some engineering projects to do. Even some experiment ideas that could be done really soon would be amazing. I appreciate all the help and I hope I can get this done.