Hanging terrariums Create mini-garden worlds filled with your favourite small plants (OR AIRPLANTS) in hanging glass.
Instead of placing candles on the edges, I think I'd make little hanging glass candle holders with LED solar lights.
DIY Ideas for Creating a Small Urban Balcony Garden - I like the slatted backdrop it could mask the ugly balcony bars
15 Indoor Garden Ideas for Wannabe Gardeners in Small Spaces. Just because you have a tiny apartment or no yard, doesnt mean you cant get into gardening. Check out these ideas for inspiration and tips