I always notice on every Prank website/forums.. 
Everyone wants to know how to make Smoke bombs.. 

If you know how to make em, then piss off. 
But if your wondering how to make them 
Visit this tutorial. 

http://www.unitednuclear.com/smoke.htm

This is the recipe for the real smoke bombs. 
Tools 
pan 
heat source (oven) 
posicle stick or spoon 
Supplies 
fuse 
KNO3 (aka potassium nitrate) 
regular old sugar 
directions 
put about 50% kno3 and 50% sugar in a pot 
heat it on LOW while stirring. 
You will know when its done when it looks like peanutbutter or caramel. take the mix and pour it on your concrete driveway in little globs about the size of cookie mix you put in the oven (if youve ever made cookies before, probably not....) then stick about an inch of fuse in it and let it dry. then just pull the clump off when it is dry or give it a knock with a hammer to the side.

Ok this is just a few things I hope will clear up all the smoke bomb questions, because they are getting really annoying. 

Where to get Salt Peter (Potassium Nitrate)? 
There are many ways to get it... 

1. Stump Remover, this stuff has Salt Peter in it just get it at a hardwhare store. But look on the back make sure it says Contains Potassium Nitrate 

2. Chem stores, if you can drive this will be easy look in the yellow pages for Chem. supply stores then go there and buy it. 

3. Internet, I like http://www.unitednuclear.com/chem.htm but you can just search for it on Google this site also has everything else you need to make black powder and it sells termite. 

I hope this will stop all the "where do I get salt peter" posts. Also I would like to add that you don't have to melt the sugar and salt peter together Pack it in to a tube a push in a fuse.

My cousin did to get even with a landlord that evicted him. There was a hole in one of his walls so he put a couple of dead fish in in the hole. He then plastered over the hole and repainted the wall. Can you imagine the smell after a month of summer heat? Nobody could tell where the odor would be coming from until the bottom of the wall would start to rot.

"Time bombs." This is the phrase I uses to describe chicken parts. Easily gotten at any supermarket, they are innocent little items that can be carried almost anywhere (in a baggie, if neccessary). But when stashed in an out-of-the-way place, like under furniture cushions in the house or under car seats or in the trunk in a car, and given a little time, YOW! Watch out for the smell! Gotten ripped off by a used-car dealer? Wait awhile, then take some test drives in some other cars. With a few strategically placed "bombs" in a car with the windows closed in the hot sun.... use your imagination. Getting evicted? Remove some outlet covers or switch covers and stuff some of these babies down inside the wall. They'll be impossible to find, and won't start to smell until after you're long gone.

Leave on your friend's voicemail a Jazz scat singing fake phone call from Homeland Security Office. For instance, "This is Jebediah from the Office of Homeland Security and scoobity dowap do wah wah, wapity dowap skaloo! We've been intercepting some of your phone conversations. Please call me back. Click."

This prank could get you in trouble at work or school so take heed that you target the right person. Place some racy photos in the photocopy machine so that the printable side is on one side and the racy photos on the other. When the person prints out their copies they'll notice the racy photos on one side. Don't get caught!

 Leave a stinking dollar behind in a place your friend will find it. What you do is put some stinky catfish bait on one side of a dollar bill and use this as glue to stick it to the bathroom sink, floor, dashboard or another place. When your friend or foe bends down to pick it up they won't be sure if it's stinky and sticky pooh or not but will surely be disgusted.

Get some clay from the art store, the kind that looks like pooh. Mix in some corn or bits of carrot, then mold it to look like a turd. This can be placed on a toilet seat, car seat, dinner plate, desk or wherever your target frequents often.

While at the beach, wait until your friend head to the bathroom or into the water. While they are not looking dig a hole underneath their beach towel where they normally would sit. Place it back so that it looks natural. When they sit down, they'll plop into the hole.

Grease finger is another of my personal favorites. Some heavy automotive grease can be put in all sorts of places where a person touches, lifts or pulls. For instance the underside of a door knob is just called for a little dab of grease. The backside of a draw handle or window handle or a lift up style car door handle are also suitable places.

The sneeze sneak attack is harmless and involve coming up behind someone with a little water cupped in your hands. Do you best fake sneeze and then splash the water on the back of their head. They will be most disgusted for sure.

Putting shaving cream in the toes of a person's shoes is always a good prank. If you get it far enough up in the shoe they will never suspect a thing.

Use someone's kitchen sink as a planter. Of course if you don't want destroy anything put down some plastic wrap first, then fill with dirt, and put a few plants in for good measure.

Plastic wrap someone's bed just for the sport of it. You can use small, grocery store plastic wrap or large commercial plastic wrap. The choice is yours and the fun will be knowing your friend or foe has a cleanup job ahead of them.