My mom made the comment last month that my tree and decor was nature-themed, and I took extreme offence, until I unpacked everything (and bought a few more things), and realized that she was right, and I was fine with it. This is the first year I've tried to buy actual "adult, grown-up" ornaments, and I'm pretty pleased with them. I've stuck to a smaller amount of ornaments, because I want to make sure they're not too overwhelming on my tiny three-foot-tall tree, and I'll be able to add a few more pieces over time. It's going well so far.
Last year I developed an extreme crush on pine tree shaped candles, and after pinning a ton of photos of said candles, I picked up a couple in after-Christmas sales just before the new year. They're lovely, though I never want to light them, and when I have a bigger space, I'll probably pick up a few more. I have the mental image of a windowsill half full of them.
I suppose my general idea when buying Christmas decorations this year was to start a permanent collection. I guess I'm looking into the future? Is that mature? I'm not sure, but I love them all anyway, and I'm pretty pleased with this year's setup. It's all festive here!