I've been spending too much time on Lifehacker.com and therefore decided I wanted to make a moss terrarium. I happen to have a backyard FULL of lovely soft squishy moss so today I went back there and gently pulled up a piece next to a place where a pot had been sitting, so there was already a non-mossy spot anyhow.
I then took a small glass (LockandLock) container and put some organic garden soil in the bottom and the moss on top. Added some acorns and a piece of birch bark for style and there you go. I am going to take this to work to keep me company at my desk.