If you start a bonfire in a wood pit in your yard or backyard, then practice extreme caution. It can shoot balls of fire on the grass and can cause a fire, especially if the grass is wilted or very dry. If you have dead grass, then the best idea is not to start one in the first place! Make sure the fuel you had to start it with is away from the fire; otherwise, your trees can catch on fire. You especially do not want an explosion caused by a big ball of fire to spread everywhere in sight.
It is always a good idea to have water near you at all times. Use lots of water to put out the flames when you are done. Fireballs are very dangerous because the gel can land on something and can cause harm to people or start a huge fire. Did you know that when something comes from space and comes in our atmosphere it looks like a big ball of fire shooting from the sky? It could be a comet, or a piece of our metal coming off our satellites.
If you want to make a homemade fireplace, such as a washtub fireplace, all you have to do is get a tub and two washing machines. If you are lucky enough to have those items laying around your yard, then that's fine. Most of the time, however, you will probably need to find these items at a yard sale or thrift store. Attach the legs to the tub, run a length of metal wires that measure 2"x4" across, bolt it to the bottom, and bend the ends. It will raise the tub up a little bit so the fire can't get out. Put the gel into cans, light them with a wand that is lit, stand back, and watch the spectacular fire start. This unique fireplace is a sight to behold and also keeps you warm when you're out in your yard at night.
Fireballs can be beautiful but if not maintained, it can turn ugly and cause burns and other serious damage. It can literally scar you for life. Younger people who want to take on this endeavor must always get assistance from an adult. This is not a game to have fun with. The only safe fireballs are the kind that Mario from the Mario Bros. video game series shoots out from his hands.