Sometimes you need some smoke if it for a video production, for fun, or just to experiment. I'll teach you how to make a simple smoke grenade.
Step 1: Ingredients
You will need scissors, coke can (or foil) and matches.
Step 2: Preparing the Heads
Using the scissors or pliers cut the match heads of the match cut about 15 or 20.
Step 3: Last Step
Using the scissors cut the can or foil to a size where you will be left with excess the you can fold over, leave small crevice for the smoke to escape.
Step 4: Activate the Bomb
Hit it hard with a hammer for it to smoke even though it will not a explode there is a possibility so wear eye protection and ear plugs. More equals more smoke experiment. (I will not take blame if you get hurt doing anything in this instructable.)