The 'Allenburys' Foods : a progressive dietary suited to the growing digestive powers : April 1909.
The pattern
This still is filed under Utility premium.
Define
The free thing is kept because it works (a calendar, a tool, a template) and the brand rides along.
Mechanism
Usefulness as media. Frequency of use is frequency of exposure. Distinct from a keepable card: here the object has a job.
Verdict
We can give something people will actually use next week.
Why it works
The calendar blotter format provides a daily reminder, while the 'progressive dietary' angle assures parents that the brand has a scientific, stage-by-stage solution for their child's nutrition.
Steal this when
You have a line of products tailored to different stages of a customer's journey and want to present them as a complete system.