Post cards

I have recently have been thinking about post cards.
Post cards are mostly sent as a message from someone who is far from home, travelling and doesn't have a permanent address, to someone who does have an address.
Jerry is supposed to travel to Israel In October, as he feels at home there, i felt it would be interesting to communicate with him via Post cards. These can be photos he or I take, or post cards that we buy. I wonder how we will chose the card and also what we will write. I hope we will continue doing so when my family and I will go back to Israel on late January.