Well, water if you are talking about natural fog. Ice and fluid if you are talking about a machine
I dont think there is one at the moment but There is a fog machine for rockband.
Yes Amazon does sell a fog machine. They actually sell different kinds and types of fog machines. Some of these are the Eliminator Lighting fog machines and also the Chauvet Hurricane 1100.
A Halloween store :)
it brackes
You can but it may use up the fog juice quicker than if using a timer.
it lasts for a month
dry ice and hot water
Yes I used to do it
You can plug in the LED light on a mist maker machine using a fog machine.
The type of fog that forms in valleys at night is Radiation Fog. It usually does not last long after sunrise.
The Chauvet Hurricane 1300 Fog Machine has nearly four out of five stars with 18 reviews. That would be the best. Additionally you could check amazon.com for more reviews.