Science, Tech, Math › Science Best Flame Thrower Jack o Lantern Idea Share Flipboard Email Print Science Chemistry Activities for Kids Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated October 04, 2019 Best Jack o Lantern Idea You can make a long-lasting tower of flame by putting a kerosense-soaked roll of toilet paper inside your Halloween jack-o-lantern. Anne Helmenstine This is how to make the best Halloween jack o lantern, or at least it is my favorite, which means it features fire. This jack o lantern features a long lasting tower of flame, plus you can customize the color of the fire. In addition to written instructions, I have a video of what to expect from this project. Best Jack o Lantern Materials You only need a carved pumpkin (or other fruit or vegetable), a roll of toilet paper, and kerosene. Use the cheapest toilet paper you can find. This project does not require special lotions, scents, or patterns. Roll of toilet paperQuart of keroseneCarved jack o lantern Set Up the Jack o Lantern Place the roll of toilet paper inside the pumpkin.Pour the kerosene over the toilet paper.Take the jack o lantern outdoors to light it. The flames will reach 2-3 feet tall and will last for an hour or two.If you want to extinguish the jack o lantern before it burns out, simply put the cover on the pumpkin to suffocate the flame or else spray the fire out with water. Spice Things Up! The red flames shooting out of this Halloween pumpkin come from a strontium salt. Anne Helmenstine If a towering inferno isn't exciting enough for you, it's easy to add more flare: SparksGet creative with your Halloween jack o lantern. You can add sparks and color to the flames by adding some colored wooden sparklers to the jack o lantern. You can put sparklers into the pumpkin at any time, even after you have started the fire.Smoke and Colored SmokeToss in a smoke bomb for some white or colored smoke. You can even make your own smoke bombs for this effect.Colored FireAdd any of several common household chemicals to color the flames of your Halloween jack o lantern. The insides of an emergency flare contain strontium, which burns a very bright red. You can get another nice effect by sprinkling borax or boric acid onto the outside of the pumpkin and adding hand sanitizer. This will coat the exterior of the pumpkin with blue and green flame.