My DH isn't a Grinch but he can take or leave it
DS(22) is very much a Christmas Bah humbug and would rather I gave him a wedge of cash than presents -also has a December birthday. I have learned not to spend money on "things" but he gets a Dec1st Box with underwear,socks,pyjamas, loungewear , showergel and face treatments , dweets/chocolate . Otherwise he wouldn't buy new clothes ! (DD gets a Dec 1st Hamper , same idea)
I love buying the Hamper bits from October
DD and I are into Christmas (we make up for it)
On Dec 1st the Christmas Bedding goes on ( Nov 1st for DD
) . Christmas straws, toilet paper, handtowels, soap, kitchen dishtowels .showercurtain
Christmas mug for DD (she uses all year)
We have a night out in Nov/Dec
Choose a day to go shopping ( usually Bluewater/Lakeside)
We used to go to London on 23rd but obviously not in the last few years
We take over the TV and sofa and watch Last Christmas and Lost Christmas
I buy some Christmas magazines and hide them till after DS Birthday to sit at the table with coffee, toast and a mince pie
Mourn the lack of a Tree as our daft cats climb it 
Just some nice , not OTT Christmas-ness
For books , Nigel Slaters Christmas Chronicles is a lovely book to dip into and either agree it's lovely or scorn Nigel , you're bonkers