Lydia E. Pinkham's Vegetable Compound (3093732018)
The pattern
This still is filed under Keepable trade card.
Define
A small card people keep (pretty, useful, or collectible) that carries the brand after the encounter.
Mechanism
Retention object. The gift is the media. Recall is paid for by usefulness or delight, not by repetition.
Verdict
We can put a physical or digital keepable in someone's pocket and they will not throw it away.
Why it works
A collectible card featuring an iconic landmark ensures people will keep it, keeping the brand name in the household.
Steal this when
When creating novelty promotional items meant to be kept.