![Made this simple bong using a water bottle, a pen (to poke the hole), a trumpet mouthpiece, and a rubber band. Works like a charm! : r/StonerEngineering Made this simple bong using a water bottle, a pen (to poke the hole), a trumpet mouthpiece, and a rubber band. Works like a charm! : r/StonerEngineering](https://external-preview.redd.it/0VTMaxVGmJZOMIED5Rypc8njSj7PuCcPD8sd40-LhbA.jpg?width=640&crop=smart&auto=webp&s=d0dda475c06e4e798e1cafd92b66222ea5874e4f)
Made this simple bong using a water bottle, a pen (to poke the hole), a trumpet mouthpiece, and a rubber band. Works like a charm! : r/StonerEngineering
![Home-made plastic bong and foil. Picture taken by the first author at... | Download Scientific Diagram Home-made plastic bong and foil. Picture taken by the first author at... | Download Scientific Diagram](https://www.researchgate.net/publication/337924098/figure/fig2/AS:836911820197890@1576546735874/Home-made-plastic-bong-and-foil-Picture-taken-by-the-first-author-at-Karismas-office.png)
Home-made plastic bong and foil. Picture taken by the first author at... | Download Scientific Diagram
![Tatered on X: "This D.I.Y. gravity bong is super easy to make and costs basically nothing https://t.co/zQeqr9SBxc" / X Tatered on X: "This D.I.Y. gravity bong is super easy to make and costs basically nothing https://t.co/zQeqr9SBxc" / X](https://pbs.twimg.com/media/C1lV-s5VQAE3xdV.jpg)