Simple smoke bomb:
2.Blow into one hole until all of the yolk and liquid in the egg are gone.
3.Rinse the egg and let it sit until it is mostly dry.
4.Tape one hole shut, not using too much tape.
5.Use the paper to make a small funnel, and stick it in the hole. Pour your baby powder/flour into the funnel until it is mostly full.
6.Tape the other hole shut as well.
7.Find a tree, and throw it! The bomb will explode and powder will fly everywhere. Enjoy!