Here's another idea that looks good in any part of the house.
A Bonsai Forest. You know those small Japanese tree forests in  pot.

This is what you need:
-suitable trees (a group planting should consist of different sizes of trees, a few tall ones for in the middle and several smaller ones to plant on the sides. Use trees mostly growing upright, as the composition could look unnatural)
-a large and quite shallow pot 
-soil mixture of akadama, fine gravel and potting compost mixed together 

1. Cut several pieces of copper wire (about 10 cm or 4’’ long) and attach these to the pot using the drainage holes or with waterproof glue (The wires will be used to anchor the roots and stabilize the composition of trees)
2. To provide for a good drainage, fill the bottom layer of the pot with fine gravel and akadama in a ratio of ½ to ½.
3. Now prepare the trees by removing any dead branches and removing the lower branches to create a trunk (till about 1/3 of the tree’s height). Take the trees out of their pots and after having removed the soil, carefully disentangle the roots.
4. Place the taller trees somewhat out of the middle in the pot  and add smaller trees around them, when you are satisfied with the composition of the group planting, carefully use the copper wires to anchor the trees.
5. Use the prepared soil mixture to fill the pot and cover all the roots 
6. Water thoroughly and then use some moss to cover the surface, to prevent erosion.