Freeze Ball

Freeze Balls (also known as the Spherical Petrification Modules) are an invention created by Gargamel in the 2017 movie, Smurfs: The Lost Village, in order to capture Smurfs.

Mainstream Smurfs Media
In the 2017 movie, they were created by Gargamel using the following ingredients: A pinch of newt poo, a gram of calcified fungus from between the toes of a yak, and a piece of cheese he left in his underpants last week. Once completed, they encase their targets in green ice; making them unable to escape. Gargamel uses these balls to capture Papa Smurf, Brainy, Hefty, Clumsy and all the Smurfettes of Smurfy Grove in order to extract their essence, but didn't target Smurfette in the process.

Hero: The Guardian Smurf stories
Gargamel creates these balls during the events of the Imaginarium-based story, "Dreamy's Lost Village", in order to capture the Smurfs to extract them of their essence; as well as to extract Hero and Wonder's Ki powers to combine their properties to make him invincible.