- First, we put the plastic tubing into one of the hose connector and we used electrical tape to make an airtight seal around the area where the connector and the plastic tube are meeting
- Next, we put one balloon each on the remaining connectors of the hose and wrap a rubber band around them, tightly
- Next, we measured two inches from the bottom of the 2L bottle and cut it off
- We then put balloon and hose connector structure inside, from the bottom
- We used tape to tape the opening area where the plastic tubing is going through the the neck of the bottle
- Next, take another balloon and tie a knot at the end of it and cut the large part of it, horizontally
- Now, stretch the open end over the bottom of the bottle
- Next, pull the knot down gently, which will cause the air to flow into your balloon lungs
- Finally, release the balloon with the knot and the air will get flow out
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