This was a quick little project and a lot of fun to make. My seven-year-old son, Jack, helped me with some of the steps and watched throughout the entire process. He thought it was pretty cool to make a little piece of gear out of something else that we would normally just recycle. I probably won't be making a lot of these or using them for everything, but it is a useful little container and is very strong. I could see this being used as a container and float for a small fishing kit.
If you have some time and a few spare plastic soda bottles laying around, give it a try. After making this one I made another one with an additional flat piece of plastic sandwiched between the two necks that created a dual compartment container. I think I'll use it for salt and pepper!
This instructable was originally posted on Brian's Backpacking Blog