pickle jar terrarium - wonder how long they last - seems like it would run out of air or nutrients or something, and once you unscrew the jar again, you wreck it - but maybe as a more ephemeral terrarium project. and it's just a pickle jar!
Tutorial: Spice Jar Mini Terrariums
Spice Jar Mini Terrariums Tutorial @ The Zen of Making
There is something so curious and clever about these tiny world terrariums - (Bike Break by Twig Terrariums) - Gardening Sustain
nicole-balch-west-elm-terrarium- how to make your own terrarium