Real Simple, November 08, did a spread on terrariums that I love.
As a side note, I used one of those white stools in a project, and wish I had bought a second one for myself!
Velocity carries some great vessels
(You might need to create a little DIY base or use a small pot on all of the above to prevent leaks and allow you to open it up without all the moss and dirt flying around)
If a terrarium seems too advanced for you, try one of these sweet cube vases from rianrae...
We all know I can't keep a plant alive, so who am I to judge?
