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I've actually had this idea for quite some time now and this Spy Challenge gives me the perfect opportunity to share this idea with you because whats more extreme then portable handheld fire. If you don't know what a Molotov is I'm sure the internet can help you out, but either way the Molotov cocktail does have a long and interesting history but to my surprise I haven't found anyone else mention this little idea of mine.  
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Step 1: Baking Goods

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First thing you will need to do is to make sure that you have all of the ingredients and equipment required in making colored smoke grenades, which are as follows.
Sodium Bicarbonate
Heat Source
Pans and utensils for mixing
Glass bottle and lid for throwing
Gasoline or other similar combustible liquid
Means of Ignition

Step 2: Preperation

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Once you have all these things make sure that the place where you will be doing your scientific investigations is in a well ventilated area, outside seems to be the ideal location. Also make sure that its not entirely windy and that you have proper PPE as your attire.
I'm not going to beat this dead horse any longer because there are many tutorials out there that describe this in grave detail. What I want to do here is connect two good ideas into an even better one.

Step 3: Puffs

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Next comes the tricky part. Once you have made your mixture of KNO3, C12H22O11, and NaHCO3, you will need to make them in spherical ball shapes, this can be done with a couple of spoons and rolling between the hands, while wearing gloves of course. This needs to be done alternating between adding the blue and red dyes to the batches and leaving some plain (for white smoke) until you have filled your container full of spherically shaped smoke bombs.

Step 4: Balls

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The purpose of them being round in nature is that when the vessel they travel in shatters on impact the smoke grenades will have a better chance of dissipating.