Ex husband buys me expensive Christmas and birthday presents from the children. I do not have the means to return this but the children always get to choose a book, small item of clothing along with his favourite chocolate and a card. It is meaningful but probably a tenth of what he spends. I say thank you for the gifts but I also say it is too much - I would be happy with a book etc chosen by children. He is always passive aggressive in his response either by not responding at all to say thanks for his gift which I know he will think is crap or will say something like the children wanted to spend it which they don’t as they are quite young. Huge amount of gaslighting during marriage so sometimes I think I’m in the wrong even when I’m not. I would also if I could spend more but I can’t.