Home Decor at Banggood has glass balls that hang on an iron rod, they have several tutorial illustrations, including this one. Once you have the basic how-to, there are many ideas in filling them with creative vignettes.
Pinterest is a treasure trove of ideas, but you already knew that. Here is one that looked interesting. Very simple -but reminiscent of a forest.
Garden Therapy posted a unique idea in this article: solar light caps for mason jars. Yes! Simple mason jars!
There are plenty of illustrated little gardens in this ebay guide.
Garden Sparkle’s customer Belinda Doyle made a most enticing little world in her glass globe. The blogÂ provides instructions for all the steps to pull together results like her own.