Since there were some excellent ideas here, I am going to try to incorporate as many as I can. The tank will house ferns, violets, some miniature gesneriads, and I may even have a succulent in a dry spot, just for Neil!

Heather, the cascading waterfall is an incredible idea, and I am going to "Chipmunk it out". I have a special plan for the background. Something very, VERY unique, as long as I can get the materials this weekend.