I have ds' christmas presents sorted. But I still keep seeing things I'd like to get him.
It takes a lot of self control to not keep buying stuff!
And yes, I know I'm projecting as Christmas and birthdays were often incredibly disappointing (and I'm not just saying that to be dramatic - we actually did get nothing at all for Christmas some years).
I'm generally very good at not buying toys in between Christmas and birthdays too, so I'm always annoyed that I lack the same self control come Christmas time!