With a quick look into the book: The Curious World Of Carnivorous Plants" byWilhelm Barthlott, Stefan Porembski, Rudiger Seine, and Inge Theisen. I was able to find the Asian Pitcher Plant Family (Nepenthes). The lowland swamp inhabitants should work, I don't think they sleep half the year. There have to be others as well.
Even for species that take a rest, they would be living 6 months of the year for the riparium keeper to enjoy. The background plants (ferns, mosses, grasses and cranberry) could take centerstage during the winter.
I think this is a very doable project.
Wish I currently had the tank space.