Does anyone know of some smaller orchids native to Madagascar that I might find without too much difficulty? I am looking to set some smaller ones up in a vivarium with my U. Henkeli (geckos) and I am kind of having a tough time of it. The obvious one, A. sesquipedale, grows too large at approximately 3 feet. I need them to stay around a foot.

Edit: I just remembered, but I also, to complicate things, need them to be cool growers, I am trying to keep my tank around 70 degrees and don't ever really want it much warmer than 75. It'll be humid, and misted twice daily.

Any suggestions would be greatly appreciated.