Hi there, wherever you are!
I'm Chloé, 40years young ;-) and a very happy single mom by choice (best choice ever). I live in Leuven, dutch-speaking part of Belgium. My son Loïc is 2,5 year old. Every day when he arrives home he checks the mailbox for 'posj' (post=mail). That's the reason I restarted postcrossing after a 2 year break. I got him a box where he keeps our postcrossing cards.
I have no requirements about the postcard, but if you have no inspiration for the content, instead of writing 'Happy Postcrossing', write down your favorite song, the name of a popular singer/band in your country, tell me about a local tradition or the name of a local dish. (because I love food, traditions and music :-))
Have a nice day!