FILL IT WITH ONLY THINGS YOU LOVE, LOVE, LOVE!
I live in a small space. In order to be comfortable I only have things I love in my space. I just do not have room for stuff I do not use or love.
If you fill your house with only things you love, your house will be filled with love!
I put baskets under my end table it is a way for me to get just a tiny bit of extra storage, they look nice and it uses the space under the table.
Two questions to ask yourself:
Does this item make me happy?
Do I have room for it?