Then drop it down the back of someone's plate mail?
Get sharp and heavy icicle 30' up and drop it down on dragons spine - a la Drizzt and his companions on the white wyrm.

I don't think it is intended for such uses, it's a cantrip - if it occasionally fits great! But mostly it is "cool drinks for everyone" or let's cross this swampy ground over ice formed above or...I don't know, look there is something at the bottom of this fountain and I don't feel like getting wet in this fancy clothes, dry out (like prestidigitation, but limited to drying out) etc...

Yes, I get that you're joking

