Apologies if this has been mentioned, haven't RTFT
Make an airtight will, trust, or other plan for your assets after your death. If there are any special items you want to go to certain people, put it in writing. And be sure your children know where the documents and items are.
Ditto for your wishes for your 'final disposition'. Funeral/no funeral, burial/cremation, etc.
My parents did this for my brother and I and it made things so much easier and simpler after our mother died. Everything was in a living trust w/DB and I as successor trustees. And she had set out her final wishes for herself, although Covid prevented a funeral. She and Dad had bought a double plot and she had the funds to cover everything.
Finally, have a frank discussion with your DC as to everything I've mentioned. Mum & Dad did with us and I have done with my sons. Yes, it can be uncomfortable, for us and for them, to think about when we are no longer there. But also reassuring for them to know that they will not have the extra burden of trying unscramble finances as well as come up with money for 'final expense' and no need to make painful decisions.
After our discussion I sent my sons a PDF with copies of everything. They don't have to look at it if they don't want to, but it's there for when the time comes.
Oh yes, get rid of all your crap. I went through a 'silver separation' a bit over a year ago. I've made sure that I did a 'brutal' clean out of the stuff I've collected over the decades in 'consultation' with my sons. You may be surprised at what your DC do NOT want.