Now that I am all in for Game of Thrones, I can start searching and finding GOT collectibles for everyone to SQUEE! over. The first one I've found that I really want is completely affordable and something you can keep in your pocket.
A replica made in IRON of the coin handed to Arya by Jaqen H'ghar.
The coin of the Faceless Man.
It is 1 inch in diameter and weighs in at about 5 1/2 grams.
How much you ask?
$13.99 at Entertainment Earth and more or less around the net if you really do some searching.