Recognizable cartoon figures like Snoopy, Mickey Mouse, and Felix the Cat also have a specific market, and then there's the big guy himself. Santa's look and demeanor has changed a lot over the years, but he's remained popular among buyers. Before Coca-Cola helped popularize our notion of Santa today, he often wore a green coat, or had elfish features instead more jolly ones.
My granddaughter starts kindergarten this year and she has sight words she'll need to know. We made her a set of flash cards with all 300 of her sight words for the year. I needed to get them done and shipped off so she could get a head start and they were here before I knew it. Easy to use, did a mail merge and printed them all out with minor corrections, mostly of the mea culpa variety.
These are greeting cards for the budget conscious. There are two common formats for reusable cards. Firstly, there are cards with slits in them positioned to hold pages. Secondly, there are notepad style cards where pages stick to the back of the cards. The pages that have been used for reusable cards can be removed after being received and fresh pages can be used to reuse the cards.