Dry Ice and concentrated Rubbing alcohol will be needed... The quantities are up to you!
Be careful, and wear gloves... Oh and don't forget to have fun!
Thanks to KnightHawkInLight for letting me use a snippet from his awesome video, which can be found here: (http://www.youtube.com/watch?v=EZ8ZEKI9-yc&feature=c4-overview&list=UUFtc3XdXgLFwhlDajMGK69w) Defiantly Check It out!
As for how to concentrate rubbing alcohol at home, easily using only table salt! Check out my video here: (http://youtu.be/RfA3-UGKv_k)
Thanks for watching!