A how-to on turning a light bulb into a terrarium has been posted before, but if you haven't gotten started on the project yet 1-800-Recycling has a few amazing examples to use as inspiration. The one pictured above is like a portable little escape to Yosemite National Park.
Link via Dark Roasted Blend
(Image credit: Juliette Melton)
http://500px.com/photo/864268
Just sayin'.