I didn’t understand Shrinky Dinks that much, but I did enjoy the name. The idea was that they were these large sheets that you could draw/color on, then you heat them in the over (or get your parents to do so) and voila, you had a small hard plate known as a Shrinky Dink. It seems cool when you first hear of it, but then the novelty wears off. It’s like buying those dinosaur sponges that after soaking them in water for 10 minutes would grown to be twice as big….
I can see the value of Shrinky Dinks for costume jewelery, but as a kid what would you do with your Shrinky Dinks after? Keep it around for a day, then probably lose it.