It's a lichen. I think it's called British Soldier

Lichen and Moss

gardendeb- Looks like it ...THANKS!!
Pete

The moss MAY BE a Dicranium species but not too sure with the image.


The lichen is Cladonia but I am not too sure if it is the one that is called British Soldiers and that is because of the main body of the plant behind the fruiting bodies in your image. Here is a great site with many species of Cladonia imaged.
Cladonia species

I do love the terrarium you made. I was thinking of making a few myself.

:-)