I enjoy postcrossing very much. I am in my fifties and stay at home with my special needs child. We cannot travel very far so I love receiving beautiful postcards from all over the world.
I like most postcards. Postcards of your country would be wonderful. Especially postcards of:
Lovely photographs. In color or black and white.
Views of your city
Anything about your country which is beautiful
Please don't stress over selecting a postcard. Whatever you send is fine.
I prefer single images to multi view cards.