I read cozy and historical mysteries, a bit of Paranormal/UF, and to mix it up, I read science and gardening books on occasion.
I *think* I finally figured out a way to track my progress on my card that I'm happy with. I say "I'm" but really, it's "we" because for someone who has no desire to play the game, MT is certainly invested in the mechanics of the game and the past few weeks have seen quite a bit of debate on card markers here in maison des poils de chat.
The card:

I'll add a light for each task I've done.
Links to completed tasks:
Square 1: November 1st: All Saints Day / Día de los Muertos / Calan Gaeaf
16 Tasks of the Festive Season - Dios de Muertos task (Square #1)
Calan Gaeaf: Grave Errors (Witch City Mystery, #5)
Square 2: November 5th: Guy Fawkes Night (Bonfire Night/Fireworks Night) / Bon Om Touk (Cambodian Water Festival)
16 Tasks of the Festive Season - Guy Fawkes task (Square #2)
16 Tasks of the Festive Season - Guy Fawkes task (Square #2); the task I meant to do...
16 Tasks of the Festive Season - Bon Om Touk task (Square #2)
Guy Fawkes Night: A Burnable Book
Surprise, Surprise Bonus #1 - Melbourne Cup Day, the Race that Stops a Nation!
Square 3: November 11th: St. Martin’s Day (11th) / Veterans’ Day / Armistice Day (11th)
16 Tasks of the Festive Season - Veterans/Remembrance Day (Square #3)
16 Tasks of the Festive Season - St. Martin's and Newtonmas Tasks (Squares #3 and 15)
Square 4: November 22nd and 23rd: Penance Day (22nd) / Thanksgiving (23rd)
16 Tasks of the Festive Season: Square #4 - Penance Day
Square 5: December 3rd and following 3 Sundays:
Advent
Square 6: December 5th-6th and 8th: Sinterklaas / Krampusnacht (5th) / St. Nicholas Day (6th) / Bodhi Day (8th)
16 Tasks of the Festive Season: Square #6 - Bodhi Day
Square 7: December 10th & 13th: International Human Rights Day (10th) / St. Lucia’s Day (13th)
International Human Rights Day: The Alchemist
Square 8: December 12th - 24th: Hanukkah (begins 12th, ends 20th) Las Posadas (begins 16th, ends 24th)
Los Posadas: Grace to the Finish (Manor House Mystery, #8)
16 Tasks of the Festive Season: Square #8 - Las Posadas
Square 9: December 21st:
Winter Solstice / Mōdraniht / Yuletide / Yaldā Night
Square 10: December 21st:
World Peace Day / Pancha Ganapati begins (ends 25th)
Square 11: December 21st-22nd:
Soyal (21st) / Dōngzhì Festival (22nd) (China)
Square 12: December 23rd
Festivus / Saturnalia ends (begins 17th)
Square 13: December 25th Christmas / Hogswatch
16 Tasks of the Festive Season: Square #13: Hogswatch Night
Square 14: December 25th
Dies Natalis Solis Invicti / Quaid-e-Azam’s Day
Square 15: December 25th-26th: Newtonmas (25th) / St. Stephen's Day/Boxing Day (26th)
16 Tasks of the Festive Season - St. Martin's and Newtonmas Tasks (Squares #3 and 15)
Square 16: December 26th-31st: Kwanzaa (begins 26th, ends 31st) / New Year’s Eve / Hogmanay / St. Sylvester’s Day / Watch Night
2
27