Air-Zooka!

Shoots a ball of air at your target!

A 5 gallon bucket. 2 large rubber bands. A shower curtain (rubber or plastic). And the tools are just a black marker and a way to cut a hole.

The center is already marked out just from the factory. I made 2 markings, one for a 4 inch circle and one for a 6 inch circle. I did both just in case the 4 inch wasn't big enough, and after I cut it out, I wouldn't have a center for a 6 inch hole. The 4 inch worked fine!

Your hole is cut out, now cut a square of the shower curtain and place it on the top of the bucket. Wrap a rubber band or any type of strap around the lip of the bucket and make sure it is tight. Pull the shower curtain tight across the top of the bucket.
It should now be like a bongo drum. Face the hole towards your target and give the shower curtain a good "thump". It will send a ball of air towards your target! Add smoke to make smoke rings, or just randomly scare people with it! Lol!
The shower curtain was about 3 bucks, the bucket I bought for 5 dollars and the bands I had sitting around. I am sure you could find the stuff sitting around as well. A small garbage can, any thick plastic sheet for the top...You get the idea.
About 5 to 10 minutes and you got a new prop for a haunt, or a way to play with pets and kids. Fun for all! Thank you and hope you enjoy yourselves!