Mattel Fun Flowers Thingmaker molds from the 1960s - $25 (Endicott)
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Squires near Summit
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Mattel Fun Flowers Thingmaker molds from the 1960s
These heavy-duty metal plates were used with the iconic Mattel Thingmaker toy line, allowing children to create rubbery, colorful flowers, leaves, and butterflies. To use them, a liquid plastic called "Plastigoop" was poured into the mold cavities and then heated on a specialized electric heater—a process.