There are many things you can do with vodka apart from drinking it.

A quick effective weedkiller can be made from 30 ml vodka, a few drops dishwashing liquid and 2 cups of water.
Spray on weeds that are in the sunlight.
This won’t work in the shade as the alcohol acts on the waxy surface of the leaves and the sunshine dehydrates the leaves.
Be warned that the vodka in your spray bottle will kill bees and wasps.
Keep cut flowers fresh longer – put a few drops of vodka in the vase along with 1 teaspoon of sugar.
Change the water every second day repeating the vodka and sugar.