A seasonal decoration involves a container, often resembling a witch’s pot, that uses frozen carbon dioxide to generate a fog-like effect. The solid carbon dioxide sublimates, transforming directly into a gas and creating a visually appealing, eerie mist when introduced to water. For instance, a plastic or metal vessel filled with water and small pieces of the solid carbon dioxide simulates a bubbling, smoky potion.
This decorative application offers a unique, engaging visual element to autumnal festivities. Its appeal stems from its ability to create a spooky atmosphere, enhancing the aesthetic of themed events and displays. Historically, the dramatic effect produced has been incorporated into theatrical productions and special effects, adding a layer of mystique and suspense.