This instructional Youtube video is called 'How to Carve a Pumpkin with Dry Ice.' It's easily one of the best pumpkin carving videos of the year. Spoiler alert: you will need to use a carve a pumpkin. A more accurate title would be "Hilarious Russian guy uses dry ice to make fog come out of a pumpkin that he carved with a knife, but it's still really cool, although he definitely used a knife to carve it and not dry ice." That's probably not as catchy though, so let's just go with his. 

Sources: Youtube: CrazyRussianHacker