I have a few things that I put out every year, but since I live "next door" but under the same roof as DD/DSIL and the g'kids and they have a big tree and outdoor decorations, it's really all I do...a ceramic tree made many years ago by my Best Aunt, another 2' artificial tree that was in DH's hospital room before he died, Christmas-themed kitchen and bath towels.
Last year DD wanted something "different" to hang from the brackets that hold ferns the rest of the year so I made her two silver and blue hanging baskets with battery-operated mini lights. They were pretty enough to keep and will be used again this year.
When DH and I still lived in the Frozen North, we did a lot of decorating even if kids and g'kids weren't there. He had an electric train to circle the tree, hung up lighted evergreen swags on the front porch, put lights in the shrubbery in the front yard. It was a lot of work to decorate, looked pretty, and was a lot more work to un-decorate!
Nowadays, if I need a Christmas fix, I just open the door between my place and the kids' place and walk down the hall.