We have a Halloween party at our house every year. My wife (I need to come up with a good appellation for her - I'm not fond of the term 'my wife') always makes cards, typically using photos from the previous year's party. She makes a unique card for each invitee. It typically takes about a month for her to create 60 to 80 cards.
This year she has new software (InDesign), and I just bought her a new
printer for her birthday (I hope she doesn't read the Cellar). I don't expect these tools will reduce the time involved, but rather increase the cost.
By the way, does the Cellar have a Halloween party? If not, it should.