Whiskey stones?

[dwoodward]

I got mine as a gift. Problem is that they hold almost zero heat/cold/whatever. I dropped all 8 of them in a glass of whiskey and the drink stayed almost exactly the same temperature. It's all a gimmick, no real value to them at all. If you want your whiskey cool without diluting it, put it in the fridge for a half hour before pouring, it will do the job better.