Based on sales the most favored spirits are Vodka, Rum and Whiskey. For longevity and multiple uses, everything I found recommended over 100 proof. Supposed to keep almost forever, can be used medically if necessary and puts the lights out faster. I am not stocking a mass of it, but a case or two of each at a modest price could be very useful. Another small item is cheap butane lighters you can get for .50 from the cut rate stores.