One great idea is the activity sheets based on the Disney characters and story behind Disney_Pixar's full length animated film Cars. Easily downloadable from the web, these sheets can be printed in as many copies to be repeatedly enjoyed by any school_aged Lightning McQueen fanatic.
Did you ever look for a simple calendar online, one you could download or copy, and finally decide that no such thing existed? If you do a search for "free calendar" or "printable calendar" you will see hundreds of sites but it may be difficult to find just what you want. However, there ARE many free generic calendars on line and knowing how to look may help zero in on what you want.