no where
You need to buy a special machine
Rose Art makes a small cotton candy machine that looks almost like a toy! It is easy to use and makes real cotton candy for your children to enjoy. You can look here for more information http://www.amazon.com/Rose-Art-5777-2-Cotton-Machine/dp/B000068EY1.
WEGMANS!
Circuses, Fairs, sometimes merchant stores and candy stores.
To make Cotton Candy Sugar you mix flavoring with "Sanding Sugar". sanding sugar is not the same consistency as your normal granulated sugar. There are a number of places where you can purchase different flavorings to mix in but i prefer using a product named great floss. it comes premixed in a one pound container. there are a number of different flavorings available.
a carnival haha
winco or walmart 1 dollar
This item would be great for someone who has kids and birthday parties for the child. There is websites where you are able to rent the cotton candy machine or buy one for more than one use. There is a website called Pop Corn Supply which would be able to tell you all about the cotton candy machine and the different supplies that would be needed. If you were going to purchase a machine because of more than one use of it there is the website called Sears or Target. These items are also sold in the stores Sears and Target. But the url to Pop Corn Supply is http://www.popcornsupply.com
You can't, marshmallows are a simple syrup with air whipped into it. Cotton Candy is made using a special type of flavored and colored sugar. Factories may be able to do it, but the home cook certainly couldn't
You can buy it online easily here: http://www.amazon.com/s/?ie=UTF8&keywords=cotton+candy+sugar&tag=googhydr-20&index=aps&hvadid=3280754701&ref=pd_sl_2gjsji11sh_e Or Here: http://www.popcornsupply.com/c/cotton-candy-supplies Or possibly if you have a party specialty store near your area.
you can buy a woozworld membership on the site or at target.