All images via Design Sponge
For me is not about expending a lot of money and having expensive things. Always remember money can't buy good taste. I think is more about the little details and displaying them. If you love hats, magazines, shoes, pots etc... Try to display them nicely and integrated them with the rest of the decoration, display your hobbies too, books, gardening tools, painting, vinyl it doesn't has to look messy and adds a lot of personality to a home.
Quirky little things, gift with memories, a little drawing someone made for you, frame it and hang it in a wall, these little details always makes a home feel special. Also, bringing the outdoors in. Plants are an easy and no expensive way to do this. I love the branch hanging in the wall in the last photo, I think it looks so beautiful. The branch rack is so easy to do and it looks great. You can check my post where I made one here!