Congrats on the thinning. I find that thought the most daunting. H has returned 3 times for 'his things' and only takes 1 or 2 at a time. It will be up to be to finish the task. I, too, know he has sentimental things that he has forgotten all about.
We are progressing. It's a sad prospect, but a positive one. Yes, I too think of my husband on a daily basis, but now, somehow it is different. Almost as if I'm thinking of an old friend from whom I've completely lost touch. Those old memories are far better than the reality at present.
I think your plan is a good one, and a mature one in regard to things he has forgotten but would want if he remembered.
I've been decorating the tree myself, and have noticed it is not the sad chore I was dreading having to do. We will survive, or so Gloria Gaynor says.