I figured out how to chill drinks (or anything) in under a minute, with minimal spending.
Pour water into a container (that fits in freezer) pour enough salt into the water to make it that it doesn't freeze (this might take some trial and error) put the container in freezer over night. Once it has been in freezer over night you can put whatever you want in the container and it is cold within a minute. - have tried it and it works superbly. Reply with any questions please