I learned about a man, a while ago, who owns a sealed jar terrarium that has only been watered once in 53 years (See the article). I was intrigued by the idea of creating a self sustaining ecosystem in a bottle, and decided to try making one. I decided to design my own tools in order to have adequate access to the bottle, since the one I wanted to use was an old bourbon bottle with a narrow mouth.
After designing and building the tools, I found some moss and bought a small plant and used the tools to insert the moss, plant and soil into the jar. I added some water, and now I'll wait to see how it does.