Well......... Typical Smoke ring shooters (like Kip-Kay's and other people's) require a fog machine in order to create the smoke needed for the rings. When fog machine's can cost in excess of $100 where I live, many may resort to dry ice. At first I tried just dumping some dry ice in the bottom and pouring some water in. Since the co2 is heavier than air, it just stayed at the bottom and I epicly failed. Luckily the solution is supper simple and cheap...
Some garbage bin or large bucket of some sort
A good sized container with a lid. (like a lemonade pitcher with a lid)
2 feet of garden hose
Ping pong ball or something similar
tape tape tape tape :D
Step 1: Choose Your Size
Step 2: Cut You're Hole
Step 3: Making the Skirt (or Whatever You Call It)
Step 4: Smoke Feed
Step 5: Glue It!
Step 6: Shoot It!
Step 7: Improvements
The first thing that you could do is to keep the water from cooling down to such a low temperature that the dry ice creates an insufficient amount of co2. The way that I would go about this would be to use a metal container and having a small flame constantly burning under the container to keep the water from getting to cold.
Secondly, you could attach a bungee cord or something similar to the skirt and run it through the inside so that you only need to pull back and release.
Video coming soon!