So your company has decided to take advantage of personalized calendar printing. Now comes the time to decide what exactly is going to be on that calendar. The topic of a calendar is going to be the deciding factor on whether or not a person actually decides to keep it and put it up, so you need to pick something your demographic is interested in.
A straight up advertisement isnt likely to get a person excited about your calendars. Every calendar has a theme. Its up to you to decide what theme you want to use for yours.
One option is to find one that relates to your industry. Heres one possibilities: you run a home improvement store, and so each month you have the page listing different tips for repairing something, or other home improvement suggestions. Given the prominence and popularity of various shows that deal specifically with home improvement, people are interested in ways to get things done themselves.