I got some more items posted on Marketplace. I'll give it a week, then lower the price, then one more week and it gets donated.
I've started decluttering tasks as well as things. Instead of dreading and putting off things like making appointments, untangling insurance issues, etc, I just do it as soon as it pops up. In the main, it's taken less time to just do it than mental energy to avoid doing it.
And for new items coming in, I try to only touch it or decide about it once. No more putting mail aside to look through later, no more putting papers in a pile to look through when I get a minute. I just take the minute to put it away, do the task, or toss it.