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My dad used to bring home boxes and boxes of used punchcards for us to play with. IIRC, they were about the size of an envelope with lots of tiny oblong holes in them, about a couple of millimetres across. Sometimes they only had one or two holes in them, and my mum would make those into flash-cards. The ones with loads of holes in were great for drawing night-time cityscapes: you used them as a stencil, coloured through the holes with a yellow felt-tip, then drew buildings round them.
I also got given a slide-rule to play with when I was 10, and a reverse-polish calculator. I had a proper calculator as well though. |
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