if you want to find out which casinos are having Christmas bonuses/promotions try checking the gambling site's ANN thread here in the forum, they usually post if they are having Christmas bonuses/promotions. also, I remember reading on crypto.games ANN thread that they are having daily challenges and giveaways as part of this month's Christmas bonuses/promotions.
That's true, the announcement discussion thread of all the available gambling platforms available on this forum could also be put into consideration, but I must make this in addition that OP should try as much as possible in reading through the conditions that comprises some of these offers before applying, bonus sometimes is nothing free because you will have to work your way out for it before being eligible.
Not sure if OP is here to ask for help , instead he is here to advertise so we must not focus in the title but about the whole topic , also he wanted sharing sites about the christmas bonuses and events, means after this year the thread will be blocked.
I’d suggest using stake.com, they give out bonus codes on their telegram daily until christmas day, and they’re also hosting pretty big wager competitions, but you have to wager a decent amount to even get a prize. They also do weekly raffles, and the prizes are increased for christmas.
Stake has been in the OP, there is no need to add it here as obviously it is listed and OP is asking for other sharing.