Traci, I really know nothing about this, except that I've seen "orchidareum" posts at other forums a while back. I think a lot of people use them for the real humidity loving plants....like masdies (!) and other pleurthallids. So, maybe do a search. I think there is a terrarium forum on GW too. At the show I went to in New Hampshire, they had a couple set up for the cooler/humidity loving plants. They were pretty cool and I bet it would be a fun thing to set up - especially if you an interest in these types of plants. Let us know what you find out!