"No"? A football field sized red flag. Possibly some married people work out a "veto" deal where one can block the decision of the other, but even this act would have to be done with sensitivity and care.

I understand the value of limiting presents for birthdays and Christmas, but that flat no raises far bigger and more important issues. There is no boss in a marriage, it is a partnership. Your boss can tell you no, your partner must negotiate to no.