Blended families get to invent traditions nobody else has. The weird new ones often turn into favorites.

Starting from scratch is the hidden advantage in a household that got rearranged. Families that have been the same for decades are locked into traditions nobody chose and nobody can change, while a new arrangement has no fixed version of Christmas morning or Sunday dinner. Inventing one feels forced at first and slightly ridiculous. Then it happens twice and it is simply what your family does.

Propose one small thing rather than a grand plan. A particular film in December, pancakes on the first Saturday, a stupid trophy for something. Say it is a trial, so nobody has to defend it, and see which ones survive the year.