Last Minute Pastry Bag (from Recycled Products!)

How to make a Pastry Bag from common things you have at home. Ideal for those last moments when you need one and can't buy one!
By the way, this is my first instructable so be nice! ;-D

Step 1: Getting Started!

It's always a problem when you are in the need of something you don't have and there is no way of obtaining it by just buying it, and sundays are those days... I came to live to Finland and appart from not bringing enough winter clothes ;-) I didn't bring any pastry bag! Duh!

So... what to do? Just build one! It's really easy and effective plus you a reusing things you would probably throw away!

What do we need:
1.)_An empty bottle_; One small soft drink, water or whatever bottle with an screwable cap will do!
2.)_A clean plastic bag_; A normal grocery bag will do, just don't use a really thick plastic bag, it's worse for squeezing!
3.) A knife, cutter, scissors, anything like that.

Step 2: French Bottle Revolution!

Then, shouting Vive La Republique! , grab the bottle and behead it as low to the neck as you can.
Note that there will possibly be many pointy edges in the plastic. You should try to make the cut as clean as possible by cutting off with a cutter those parts or just use heat from a stove o lighter to make them blunt. Failing to to it will cause hole into the bag when you are squeezing it and all the content comes out.

Get the cap and with the help of a scissor peel the plastic circular seal that exists in the concave part of it.
Now bore a hole into the cap. I just used a pair of scissors.

Step 3: Making the Contour Mask

Get the seal you peeled from the cap, draw a pattern as you wish (stars work best!) and cut it off with a cutter knife. If the seal is too thin you can use a thicker piece of plastic like the one covering pringle potatoes.
Finally put back the seal in place.

Step 4: Finishing Off

Now place the neck of the bottle in the bag, preferably in a corner, and screw the cap onto the neck (from the outside!!!). Make a hole into the bag though the cap and tadaa! Ready to use!

Final consideration: You could alway use only a bag with a hole, but I find adding the bottle head helps when decorating pastry.