Seattle-Tacoma International Airport (SEA) is one of a growing number of airports that have a few free little libraries on site, offering travelers a place to pick up or swap free reading material.

It’s an example of an airport amenity that many passengers take advantage of.

This week, we stopped by one of the airport’s information counters and noticed a pile of free postcards featuring the image of one of the airport’s free little libraries.

We’re making this a nomination for Airport Amenity of the Week.