What you’ll need: A empty and cleaned 2-liter bottle 2 tbsp rubbing alcohol 2 tbsp water Bike pump (with an adaptor to fit the 2-liter bottle opening) Safety glasses Step 1) Add both rubbing ...

Cloud in a bottle. Pump a soft drink bottle full of air, pop the top and bam! A thick, ... Rotate and wiggle the bottle to swirl the alcohol around for 10 or 20 seconds to 'encourage' it to evaporate.