Dude if they are knicknacks and stuff you like, but have a hard time keeping out because of decor then pack them all up and store them, you are still young, maybe you will have a littler girl in the future that down the road she might want them. Plus you can explain the history and significance of them to her. Kids and children like that stuff. Especially if they never get to meet them. Don't just piss it away. No shame in saying items have a meaning to you and you keep them. My .02
My dad tells me stories about my grandfather when I go out to see him, He died when I was 5 and I so wish I could have spoke to him as an adult. I have a few things of his, and will pass them on and tell the same stories.