“Things” is figuring out what to do with belongings that are attached to precious memories and feelings of familiarity. Here are some suggestions that might help.
When we were selling our unneeded possessions in preparation for living in an RV, I made keepsake boxes out of books I purchased at a thrift store that wouldn’t take up much space.
If you have grown children, give them the Christmas ornaments that belonged to them as kids for them to hang on their own trees, and enjoy those memories when you visit for the holidays.