If you haven’t kept up with novelties from the 1970s, you might be surprised to learn that Shrinky Dinks, plastic cutouts that shrink and harden into three-dimensional trinkets when baked in an oven, ...

Shrinky Dinks are a type of plastic that you can use to color on and cut into shapes. Then, you put it in the oven and watch it shrink. Invented in 1973, these little crafts are a classic and can seem ...