Science experiments are lots of fun. In this day and age, there are plenty of people trying and sharing them online, so you can replicate them at home. NightHawkInLight has shared a guide that shows you how to build your own high velocity vortex cannon.
For the cannon, a propane torch is used as the fuel source. You are going to need pipes, PVC adapters, plastic funnel, duct tape, and a few other components to pull this off. You can find the instructions for this project here. Pretty rad, don’t you think?