Shrinky Dinks are an arts and crafts toy for children invented in 1973 by Betty Morris from Wisconsin and later marketed by the colouring book giant, Colorforms . They start out as thin, flexible plastic sheets that can be coloured with pencils and cut into shapes. When heated in the oven, the plastic shrinks into a much smaller, thicker, and more rigid form, while retaining the colored design.
The first kits were manufactured by the major toy companies of the time such as Milton Bradley, Colorforms , Western Publishing, Skyline Toys and others.
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