With just two 3D printed parts, a couple simple components, and a mixed concoction, you can clear a room with your very own 3D printed stink grenade. Designed by the three 12-year-old kids behind BananaScience and 3D printing website AMO 3D, the stink grenade relies on a 3D printed body and "spoon" to house a stinky concoction made of garlic and onion mixed with sulfur powder and water and left out to rot for at least a day. They've made the files available for free download at Thingiverse and created a YouTube tutorial for the entire process. Read more about their room-clearing creation in the full story: http://3dprint.com/93499/3d-printed-stink-grenade-bomb/