I agree with Bev if you are going to put a pot inside the cage I would surround the pot with moss. You can get it at the dollar store.
I love succulents so I immediately though of succulents hanging down. But if you are going with a house plant I still like to see something that drapes outside the bars. It is hard to see plants inside the bars.
I would look for plants that have pretty leaves. Flowers are fleeting but foliage is always.
The only thing I can think of is ivy but it is hard to keep the humidity it needs inside all winter in our climate.
Oh I know how about one of the many Wandering Jews. There is a pretty green/pink/white one and I like the purple one that Tiffany uses in all her pots. Purple passion is a pretty plant that is not hard to keep in doors in the winter it would look pretty hanging down.
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Another easy colorful plant cryptanthus plants. They grow in pots and it could be the plant in the middle of the cage with your hanging plants.
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