This guy made a pocket sized terrarium out of Lego pieces. You can see his process here.
The miniature ecosystem, barely larger than a handful of Lego pieces, features real plants and soil enclosed within transparent Lego elements.
I hope it will stay sealed and growing for years to come. As one YouTuber commented, "This terrarium should outlast the entire universe."
Previously:
• Apple placed in terrarium attracts fairy-tale-like scene of snails
• This closed terrarium has been going strong since 2007
• Learn how to make a mini terrarium with Ben Newell
• This 12-year-old bottle terrarium is teeming with lush life
• HOWTO make a terrarium inside a Christmas ornament