Squirrel one of these per person you love, recurring every 365 days. The 2-week lead exists because shipping exists. Day-of flowers are a save; day-after flowers are an apology.
Recurring every 365 days, 3-week lead. Good restaurants book out weeks ahead — the lead-up nudges are for reservations and gifts, the day-of nudge is for you.
The task with the longest pipeline in family life: photo, printing, addressing, stamps, mailbox — all before mid-December. Start when the Halloween candy goes on sale.