How to make guinea pig water bottle | Pilot version

Hey guys ^_^ I have to mention, that this is my first "how to"-type video and in addition to that, I'm not an expert in making pet accessories, so please don't be too critical while rating this tutorial.
In this video, I tried to make an experimental model of guinea pig water bottle. I haven't tested it yet, because I lack metallic ball at the moment.
If you have any remarks with regard to how I can develop it, don't hesitate to write in the comments below.
Thank you, enjoy the video.