I know you can keep plants in terrariums, but is it possible to have a functional mini ecosystem in a large container, such as a sealed glass jar? - Quora
The Basics of Closed Jar Terrariums : 5 Steps (with Pictures) - Instructables
Jodeco Glass DIY Bottle Garden XXL Biosphere Set Plant Terrarium with Cork Lid Just Add Plants Diameter 19 cm Height 30 cm Mini Garden Glass Plant Terrarium : Amazon.de: Garden