I've seen moss pots - just simple little pots with a sweet little mound of reindeer moss - displayed in some of my favorite magazines and catalogs lately. I got these terra cotta pots at an antique shop several years ago and decided to try it:
Some of the pots I had were too wide at the bottom for the top of the styrofoam ball to peek out of, so I just used some paper at the bottom to raise it:
Placed it in snugly, and...:
So happy with these!