My wife likes me to put a 2 litre bottle of coke in the freezer to turn it into 'slushies'..

Timing is haphazard, ie, remembering to check between ad breaks in TV shows..[bad news if we both fall asleep on the sofa]
and the results are not without Russian roulette element of risk
of a highly pressurised foaming fountain
or a solid bottle of ice....