About Katka...
I started this account for my son (7 years old) to make him happy about receiving some real mail :-) ...and we both do enjoy marvellous examples of various stamps and postcards.
We prefer pictures of ...
1/ all kinds of VEHICLES / transport symbols;
2/ landscapes and SIGHTS (nature, industry, landmarks, national symbols, etc.);
3/ ARTS & ARCHITECTURE (including traditional and folk arts; music, film or cinema);
4/ animals;
5/ cartoons, jokes, motivational, ...
Photos, cartoons, paintings; shaped postcards; whatever inspiring and suitable for a curious little boy. Advertising postcards are OK if witty, interesting, clever.
Instead of a message you may draw a very simple picture: simple picture-language for a little schoolboy.
Thank you ;-)