Step 1: make plenty of ice

 

Ice can easily be made in your backyard using 5 gallon buckets, trash cans, sleds, or even just by putting some 6 mil plastic over a 2x6 frame. Just pour in the water and let it set out for a few nights with temperatures below 10 degress overnight. Colder overnight temperatures help you make ice faster. Once the ice bucket or ice block is frozen, just turn it upside down and take it out of it's form. To get them out faster, just pour hot water on top of the form and it will slide out right away.