Hi. Yes can relate, but it's a DC and others rather than a partner.
I also suspect behaviors can be effectively 'catching.'
IME when one person in any relationship is living officially 'incorrectly' it provides excellent cover for others to also do it, without the need to take responsibility.
'Well you keep / eat / buy / fail to exercise / need disability breaks, etc etc SO much, so how can you complain if I do an IMO lesser version of the same thing?"
It's a hierarchy of 'wrongdoing.' and all your fault, if you let it be.
Hope it's ok to say this; please ignore me if not: my instinct is you already have issues about being 'low' in family hierarchies, and he's good with amplifying it.
If I'm right, do you know why it might suit him?
You mention your parents issues. (My parent squalor hoarded) The fact that stuff was background normalized for you may have also left you less judgemental, more understanding, forgiving of foibles etc, and that makes you more attractive initially for those with their own issues. It can take time to realize you attract similar.
Taking responsibility for your own shortcomings and asking others to do the same but expect push back and learning to appear to be / or be dispassionate helps. I'd avoid blame games, it doesn't help anyone, but yes there can be all sorts going on there.
These are my attempted practical solutions but I appreciate there's deeper issues than the practical. (I'm just out of time for anything but with mine)
You mention multiple books plus other presents. Is it worth actually stating what you want as a present?
I really struggle with letting go of anything given to me by those close to me, (childhood deprivation and destruction means I over value nice gestures) so have diverted the excessive 'but it's your birthday/Christmas' giving, into I choose special items and or if I can get away with it, shared experiences.
The theory is to regain control from the flooding you with stuff buyer, and do enough work on myself to in the future get an agreement of one more expensive item, instead of multiple cheaper ones, but if I can't, at least I'm hoarding things I truly enjoy, rather than being only attached because X gave me something.
Do the magazines go to recycling when DD's done with them? Does she want to keep the freebies? I'd try to throw out the magazine tat yourself if you can? Yes he's bringing it in, but if DD isn't attached, it's you it's annoying.
Possibly collect it up, and dispatch to charity shops/ jumble sales as batches.
"Did you mean to throw X out?" Stock answer: "Well if it's in the bin, then clearly yes." On repeat grey rock style, every time. Show no emotion, (only encourages it) and push the subtle suggestion it maybe shouldn't be, would you like to reconsider? firmly out of your head.
Two identical kites when she already has one? Oh lovely she can now involve friends in kite flying, and they have a kite to take home! That's kind of him.😈
I know some of this is easier to say than do, if you're holding on instincts are high.
If he's moaning to you about you having a problem, I'd suggest agreeing and educating him about what makes it worse, and what he can do about it, but be aware sometimes the more that's understood, the more gets used.
I'm on a mission to sort out my issues (running out of time and money not to) and while it would be nice to have co-operation and help, I'm not allowing the lack of it to stop me, even though it causes quite a few unpleasant situations.
Depending how big your issues are, I'm afraid you may have to reach the same place in the end.
Out of interest, do you know if he's buying/acquiring good quality charity shop/freebies or on sale bargains as his gifts and presents?