The best replacement for dry ice is ice.

The best alternatives to dry ice are rated as following:
★★★★★  ice
★★★★★  regular ice
★★★★★  fog machine
★★★★  liquid nitrogen
★★  gel packs
★  soda blasting
★  bubble hash
★  ice packs
★  wet ice
  water ice
  liquid nitrogen colder
  smoke machine
  oxygen absorbers
  hot ice
  block ice

Your alternative for dry ice is not listed? Suggest!
Speaking about dry ice, one probably shouldn't forget about regular ice.

Other search terms related to dry ice and their ratings are:
★★★★★ regular ice
★★★★ acetone
★★★ punch
★ c02
★ co2 tank
fog machine
bubbles
You have in mind a companion for dry ice and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dry ice in all years. Click on graph for more.
dry ice
ice
regular ice