Booth managed to piece together the explosive device in his home workshop, making sure not to violate any laws in the process, by using items like an Axe deodorant can, dental floss, lithium ion batteries and water. https://youtu.be/Lsem22DkIjw He, essentially, built a weapon that was capable of blasting pocket change through sheet rock. When combining the lithium metal with water, it creates enough heat to explode the bottle of Axe, sending the pocket change flying. It’s important to note that Booth has contacted the TSA and the FBI and the FBI made an unannounced visit to his house. According to Booth, their questions were centered around whether he had made the weapon at the airport, which he states that he did not. Minds
