Hydrogen, a highly flammable gas, can be easily produced from water through a DIY hydrogen generator as demonstrated by Maciej Nowak. The generator relies on the electrolysis of water, where passing a current through water splits H2O molecules into H2 and O2 molecules. The acrylic tanks equipped with electrodes facilitate this process, allowing the produced gases to be collected for later use. The project not only showcases the construction of the generator but also demonstrates its functionality by utilizing the generated gas in combustion experiments. Despite technically producing oxygen as well, the innovation and simplicity of the hydrogen generator are highlighted, emphasizing its potential as a source of fuel for various applications.