Postcards - What to do with them

I love postcards, both receiving them and creating them myself.  But what does one do with them once a large pile has accumulated and continues to grow? Mine are generally displayed in a large clamshell at the beach cabin.  I have even framed and hung them on the wall in such a way as to "suggest" headboards above each of the beds (I had to get creative after checking out the cost of real headboards for the six beds in the cabin).  This was a fun project, and saved a bundle on real thing.  See Fig. 1 - 4 below.

  Bedroom 3                                                   Fig. 1

 

Bedroom 3                               Fig. 2

 

Bedroom 2                               Fig. 3

 

Bedroom 1                                                   Fig. 4