I would say spontaneously:
pocket calendars
- are partly free advertising materials of companies
- have improbably many different motives
- are very small
(usually 6 x 9 cm) and good tradable (1-sheet-calendar)
- can be stowed away and arranged well
There are pocket
calendars
in nearly all countries of the world
and
pocket calendars are failed and attractive collecting objects,
as you can seen on these sites !!!
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