I've done a master plan of meal planning, shopping list for food for Christmas eve day and boxing day. Present list and Christmas card list.
I opened my Cookery Year book (yes, OK, very 1970s but DOES have everything you want it need recipe wise) in order to stick it in for future reference.
I found a timeline of Christmas Day my late father had written including when to put turkey in, time to open presents etc.
My father must have written it in the 70s-80s. He died when I was 11 but I guess my pedantry comes from him. I don't have many memories of him but this was lovely.