Below is my friend Shannon's gorgeous living room. These mirrors are perfect - I love how each is different and it looks like a collection she compiled over time. I think details like these are what add "layers" to any room - instead of a room looking like you went to a furniture store, picked out a room where everything matched and brought it home, decorating in layers takes time, but also gives a room so much depth.
When I first wanted to post about mirrors, I realized I only had one such example in my own house (hence hijacking Shannon's living room for the purpose of this post). These mirrors I found at a great home/antique shop in town. I have heard you should always display items in odd numbers, so I purchased three and used ribbon to hang them in our guest bathroom (notice my new train rack reflecting!). If you have a collection of small hand mirrors that don't match - even better!