I made baking soda and vinegar bombs and man they were loud!
Heres how you make them.
materials:tissue, baking soda, vinegar, water bottle, funnel.
Take a tissue and spread it out. Put baking soda on it and roll it up and bend the bottom of tissue. Meanwhile fill bottle with vinegar and put roll of baking soda in vinegar and cap it, shake and throw. It will explode but do it on a hard surface(cement).
Please don't blame me if you get in trouble for it or if they blow up in your hand. heres a couple videos on it.
http://www.youtube.com/watch?v=rlgHJVnvaM4&mode=related&search=http://www.youtube.com/watch?v=cvP7_-yE52wreply on how yours went!