Icicle dry ice drink stirrers turn swizzle sticks into staffs of billowing smoke to accent your Old Fashioneds and add visual drama to your glasses of Champagne (which will complement the physical drama you'll feel the morning after downing more than one of them). Icicles have bottom chambers that hold small chunks of dry ice and let them puff out their trademark smokey vapors while you drink.
Presuming you're using food-safe dry ice, Icicle stirrers are harmless to swirl through cocktails, non-alcoholic drinks, or even hot drinks if you want your Bailey's & coffee to steam with a little more passion. It's probably going to be a pain in the ice to cut up any blocks of dry ice you'd typically get from the grocery store, but I understand some vendors also sell dry ice pellets that will slip easily into the Icicle base. Whichever kind you go with, Icicle maker Ice Factory says the solid piece of gas and its smokey effects won't change the flavor of your beverage.
Icicle dry ice drink stirrers come in reusable packs of 10. You can also adjust the length of each swizzle stick to fit smaller glasses.