My Little Pony first appeared in shops in the United States in 1983 and in that decade alone more than 100 million would be sold.

But American toymaker Bonnie Zacherle tells Josephine McDermott how her idea to make a pony you could play with like a doll was turned down several times. She reveals the toys she liked to play with as a child living in Japan, how she updated Mr Potato Head and how her pony design first hit the market as a much bigger, harder model called My Pretty Pony.

She says she told her friend in toy marketing to get out of her office when she first suggested the ponies should come in pastel pinks and purples instead of realistic dun, black and grey colours. But she concedes that market testing showed it was what the customer wanted and she’s very proud of what she’s achieved.

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(Photo: Bonnie's black My Little Pony prototype. Credit: Bonnie Zacherle)