List Of Things One May Feel Inclined To Buy Cards For

• Birthdays
• Christmas
• Easter
• Eid
• Hannuhak
• Diwali
• Valentine's Day
• Mother's/Mothers' Day
• Father's/Fathers' Day
• Anniversary
• Engagement
• Wedding
• Wedding Acceptance (Sender)
• Sorry, We Can't Come To Your Wedding/Soiree (Sender)
• Grievances/With Sympathy
• New Baby
• Christening/Batism/Whatever
• Good Luck
• Passing Exams
• General Congratulations
• New Home
• Getting A New Address (Sender)
• We're Moving! (Sender)
• Apology
• Late Birthday
• Thank You
• New Job
• New School
• Leaving An Old Job
• Retirement
• Get Well Soon
• Justin Bieber Day. (It's actually a thing. Today. If you send me a card for this, I will disassociate myself from you permanently.)

Any I've missed, please feel free to add :-)