Answer: Ficus grows well indoors and is a good candidate for using as a room divider. You might also consider using Dracaena, Palm, Schefflera or bamboo. Another idea is to use a planter box with a trellis and plant a vine or climbing plant. A few indoor-friendly vines or climbing plants that you could grow on your trellis are:
Passiflora (aka Passion Flower), Philodendrons, Pothos, Fatshedera or Ficus Pumila.
The plants you choose should fit the available light and temperature - being near a fireplace can be a problem for ficus but shouldn't bother bamboo or palm. Pothos will grow anywhere, as will dracaena. Just a few things to consider, but I like your idea of using plants as a room divider.
Best wishes with your indoor garden!
Q&A Library Searching Tips