Quoted from metallik:It's incredibly unlikely the postcards would be stolen. A scammer would have to know a legit pinsider requested the card verification, they'd have to know where the pinsider lived AND they'd have to steal the card the day it arrived. And it would all be for naught because the recipient would alert Robin the card never came and that particular code would be invalidated.
Mugs are cool but cards would work fine.
I'd have to agree with this one. I think a post card would be sufficient for 99% of the people on this board, or even just a simple card in a sealed envelope.