How about using an Oasis Wreath on top of the urn? I have done this several times and I love it...
http://www.ubloom.com/index.php?option=com_content&task=view&id=141&Itemid=152
I've seen J do this before, Twila. I've thought about using that technique for this, but decided since it didn't need to be all around I would stick with what I kind of know. Thanks for the link--I haven't seen this in awhile!