I don't know how many would remember Kalkitos (or even know about it). But both Terence and I played with it when we were kids, using pencils to transfer dry-transferables containing cartoon images from plastic sheets using pencils onto a scenario printed on cardboard. We don't remember that it was called Kalkitos then though.
Kai liked it quite a bit when he started, but he lost interest after a while. Maybe he's too young for Kalkitos or perhaps in the advent of iPhone/iPad apps, computer games, and cable TV, Kalkitos has lost its charm among the young?
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