You will need
- Empty 2-liter bottle
- Hot water
- A few drops of alcohol
- Ice cubes
To make fog in the first one-third fill a 2-liter bottle of very hot water.
Put a few drops of alcohol into the bottle with the pipette.
Take an ice cube and hold it over the neck of the bottle. Here is the fog.
Observe safety precautions when you fill the bottle with water. Burns from boiling water can be very strong.