Water
A large bowl with a lip around the top (a smaller bowl or cup will work too)
A strip of material or cloth
Soapy mixture for making bubbles (water and some dishwashing liquid should do the trick)
Dry ice - one piece for a cup, more for a bowl. Places where adults can buy dry ice include large grocery stores and Walmart. Butchers and ice cream stores might have some too.
Safety first! Be careful with dry ice as it can cause skin damage if not used safely. Adults should handle dry ice with gloves and avoid directly breathing in the vapor