Introducing the Crystal Terrarium: A Planty Prism of Pure Pizzazz!" It’s the answer to all your botanical desires. Assuming that’s your thing. The Crystal Terrarium is a six-sided wonder. With its geometric design, your air plants will feel like they're living inside a botanical spaceship, ready to explore the uncharted galaxies of your living room. Or maybe not. Anyway it’s pretty cool. And it’s not a boring circle. We’ll leave that to everyone else.