I just refuse to do cards. Birthday, Christmas. I find it so pointless and a stamp is a pound and a trip to the post office is a pain when I have work etc.
I've stopped sending any cards at all. I thought we were heading into the age of technology. I don't see why cards are lingering about being a thing when we can easily send a fancy and snazzy message with moving pictures and sparkles.
Cards need to naff off, right?