It's not as big as mine, but this is where I get my inspiration (or addiction) from. My mom, my sisters and I all have many of the same ornaments as we buy them for each other and often get one for ourselves too.
My one sister has a small "country" style (I call it Charlie Brown-esque) tree and she does not have as much room for ornaments. I have the colossal tree and have/need the most ornaments. But the funny thing is, like my mom, I can pretty much tell you the story behind each ornament... From the tin ornament that held candy, which my grandfather bought me at the Copper Kettle Candy Kitchen when I was five years old... To the ornaments that my friends Juan, Paul, Jerry and Alex gave me the last two years.
My style of decorating the tree is rather eclectic and I have no theme to the ornaments either in color, shape or style. I have handmade ornaments, figurines, novelty ornaments and various types of balls (glass and otherwise). There is always a bird's nest in the tree (good luck) and an elf hugging the top of the tree (something my folks and sisters also do).
One thing I miss from when were little kids is when my dad would build a platform under the tree and set up a train and village with fake snow and people and houses that lit up. I think I am going to try and find a picture of that.