If I were to be in your wallet, what will I be?

-ID
-Money
-Picture
-Credit card
-Coins
-Calling card
-Letter?

?Answer is given after your reply. Reply is must!

answers:
ID=Imposrtant
Money=Hate
Pic=Best Friend
Credit card=Family
Coins=Crush
Calling Card=Textmate
Letter=Sum1 Special