Postcards to Houston

Try cartoons
Try sexual inneundo
Try "Hey postman, I know you are reading this. You are ugly and your mother dresses you funny"
Try that in Spanish.
Try making a checker pattern with the stamps and dodging the message in the spaces
try putting the stamps over the spaces
try puttin the stamps and the message and the address on the picture.
try sending a 3x5 index card upon which you make a funny picture
trying sending a series whereby the message can't be read until you put them together (letters go across cards)
tryind drawing lips and saying "i'm kissing the letter next to me..smouch smouch smouch, I love you entertainment weekly cover picture person"
trying "having a nice time wish you were here:
me too.