Sorted:

Birthday of the Messenger ﷺ, Saudi National Day, Christmas are not from the Eid of the Muslims

The ruling on greeting with the New Hijri Year

Takbir on the loudspeakers for Eid

Accepting a gift for one’s birthday, even if not celebrating

Impermissibility of eating from the food offerings to idols

Gathering on food and exchanging gifts at the time of marriage and new child birth