Introduction: Confetti Bomb Prank!

Pull this one on your co-workers or fellow computer geeks! Very simple to do, but very effective.

Watch the video for the overview:


Step 1: Supplies

The supply list for this prank is short and they are easy to find:

1. 35mm canister

They will give you these for free at Walgreens or most one hour film development labs.

The white ones with the tighter lids work better than the black ones.

2. Can of compressed air

Your common air duster - found at most offices. Used for blowing the dust out of computers and keybaords.

3. Some confetti

I bought some for a dollar to make it stand out more in the video, but those holes from the hole punch work great!

Step 2: Fill the Canister

This part is simple - just turn the can of air upside down, and then spray a little of the liquid inside.

WARNING The liquid inside is extremely cold and extremely flammable. Caution is advised, especially when dealing with something that can both cause frostbite and severe burns.

Once the liquid is inside, quickly dump as much confetti inside as you can, without getting any in the way of the lid. (If the lid cannot close tightly, the pressure will not be able to build.)

Finally, close the lid tightly, set it next to your intended victim and then quickly walk away!

Step 3: Kaboom!

Now comes the kaboom.

It will take anywhere from 5 seconds to a good minute to explode, depending on several factors.

If you spray a lot of liquid inside, it will take longer to evaporate and build up pressure.

If the ambient air temperature is high, the liquid inside will likely evaporate much faster.

For a bigger boom, turn the canister upside down and use more liquid. Stand clear of it if you do. The resulting explosion is pretty violent, especially for a little canister.

Watch the video again to see what I mean. I filmed that in my garage, where the ceiling is about 15 feet high. Listen to how fast the canister bounced off the ceiling and then the floor again.



Comments

author
PyroMonger made it!(author)2008-02-03

i dont get it. how does this work?

author
bloke2022 made it!(author)2009-09-03

the super-cool liquid is a gas, when it is sprayed in the canister it turns back to gas, causing the pressure to build untill...BOOM

author
PyroMonger made it!(author)2009-09-04

I see. So it's naturally a gas at room temperature but liquid in the can until sprayed, so if it's sprayed into the canister as a liquid it will want to change back to a gas, hence building pressure and ultimately popping off the canister lid? Am I getting this right? anyone...?

author
bloke2022 made it!(author)2009-09-04

you are totally getting the concept

author
paintboy360 made it!(author)2010-03-12

Also the cold air expanding will create preasure. :D

author
bbobjoefred made it!(author)2008-03-23

lol i almost got suspended from school

author
conrad2468 made it!(author)2008-10-11

LOL I made a dry ice bomb and got extra credit lol

author
squawker made it!(author)2009-08-07

NO WAY! LUCKY LITTLE SON OF A

author
conrad2468 made it!(author)2009-08-07

well......it was a bomb....but it went awry......it didnt explode.....so technecally it was,but it didnt explode....so me and a friend picked it up and took the cap off (really really really stupid idea now that i think of it!) we had some SUPER CARBONATED WATER that stuff will BURN your mouth ha ha ha ha ha....

author
natethegreat88 made it!(author)2009-08-29

That happened to me too except it was a little embarrassing when like 5 people were watching expecting a giant boom and ending up with some really corbonated water.

author
milsorgen made it!(author)2009-12-25

 more ice, less water

author
natethegreat88 made it!(author)2009-12-26

Yeah except i only had a little bit of dry ice that i wasn't going to use for 1 bomb, but then overnight it all sublimated in the freezer.

author
squawker made it!(author)2009-08-31

Wahoo! Homestar.

author
natethegreat88 made it!(author)2009-08-31

Homestar!!!

author
squawker made it!(author)2009-08-31

Welcome to homestarrunner dot net
It's dot com
Oh right
Welcome to homestarrunner dot net, it's dot com

author
conrad2468 made it!(author)2009-08-29

Ha ha ha but i had like 20 people watching!!!

author
natethegreat88 made it!(author)2009-08-31

Yeah that would be kinda sad. Although i did once "try" to make a diet coke a mentos bottle rocket, but instead it just burst and like drenched a person in diet coke. We were using gravel type stuff when we really needed a cement type parking lot to do it in.

author
squawker made it!(author)2009-08-07

At my school the teachers will get angry at you for using ceiling darts. However, I didn't say anything about Virus's and computer pranks.

author
conrad2468 made it!(author)2009-08-08

Ha ha ha ha! Lol our teachers get mad @ ceiling darts too! I have to admit that I was kinda the teachers pet.......our "share" drive was full of .bat files cause I taught a few people how to prank!

author
squawker made it!(author)2009-08-15

As if you'd teach them. Actually what I really love are "BLUE SCREEN OF DEATH!" simulators. I found the best one on this very site. :D

author
conrad2468 made it!(author)2009-08-15

Well i taught them with information i got from this sight =D

author
squawker made it!(author)2009-08-17

K but you have to find this simulator its under one of the april fools day entries. type "prank" and you'll find it easily.

author
squawker made it!(author)2009-08-17

here it is.
https://www.instructables.com/id/April_Fools_Prank_List/
second step.
under blue screen of death

author
jchar77 made it!(author)2009-01-31

That would be so cool to set it off near the teacher!!!! That would've made a huge boom! Great one!

author
jimmy+bobb made it!(author)2008-07-11

for what

author
yeerk21 made it!(author)2008-12-10

for science..that what happend to me

author
sthealthraider made it!(author)2009-04-22

D: i live in the netherlands and i cant find those spray dusters there!! OMFG?

author
Colonel88 made it!(author)2009-10-03

the spray dusters are also used to clean computers and stuff like that.

author
coolz made it!(author)2008-04-15

can you make it explode whenever you want

author
frag+master made it!(author)2009-09-18

that might work if u put an ELECTRICAL CURRENT through it.

author
poser made it!(author)2009-02-05

haha funny funny

author
gamer made it!(author)2007-10-19

so cool man! i cannot believe that i didnt think of that before. great video explains the 2 steps in detail,lol. -gamer

author
DaNerd11 made it!(author)2008-03-02

This could be really dangerous (and pretty awesome) but what if someone put spikes in it. Also, do you think you could throw into into like a soft area without the cap popping off?

author
bwcbwc made it!(author)2008-07-11

Looks like it would scale up nicely with some tupperware or other sealable containers. With digital cameras, film canisters aren't as easy to come by anymore. Might be able to improve the resistance of the black film canister with a little glue around the rim. It won't have time to really dry, but it will make it a bit tighter.

author
DaNerd11 made it!(author)2008-07-11

good idea, tupperware would probably work

author
bowmaster made it!(author)2008-07-04

Wrap a bike inner tube around the sides so you can drop it.

author
jimmy+bobb made it!(author)2008-07-11

its very hard to get inner tubes now ware do you get them

author
bwcbwc made it!(author)2008-07-11

Walmart, last I checked. This is a bike innertube, not an auto tire tube.

author
coolz made it!(author)2008-04-27

well done! you deserve to be in this group: https://www.instructables.com/group/Cheapskate/
unless that duster was $15

author
gdrox95 made it!(author)2008-03-28

really kool awesome but the explosion is a bit small could you make it bigger by putting alot of compressed air in or not???

author
Joanassie made it!(author)2008-03-24

I think if you could attach a handle, then you might have a confetti CANNON!

author
Cougar+Mauler made it!(author)2008-03-15

does it work?

author
presto+is+the+best made it!(author)2008-02-23

that looksawsome

author
im_tux made it!(author)2008-02-22

great idea and good job

author
miols made it!(author)2007-12-05

i cant find the cot sprayer whered u get?

author
Kid45 made it!(author)2007-11-04

Very nice. I like all of your instructables, and your voice overs sound like some professional thing you'd see on a T.V commercial

author
dot12321 made it!(author)2007-10-27

It would be cool to, instead of confetti, add flour or some other powder (COCAINE!! Just kidding.) to make a cloud of powder when it blows up..

author
jakee117 made it!(author)2007-10-24

I luvs ur instructables nice voice over

author
rc+jedi made it!(author)2007-10-19

i worked in a office machine repair company. I used to spray the duster upside down on a stretched rubber band till it was good and frosty. It stays stretched till it warms, then wriggles around like a worm! I also used to "cool the coffee". If you left your cup unattended, I cooled it down! "man, my coffee is cold already"!

author
X_D_3_M_1 made it!(author)2007-10-19

k now make one with a detonator timer

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