I actually posted this recipe for homemade dough on one day, and then posted squishy circuit information a few days later. (This photo is from an experiment we did a couple of years ago with different types of batteries.) Even though most people don't have the same wires and LEDs we have at school, old tree lights and flashlights could be scavenged for parts (with permission, of course). Hint: you need both the conductive and insulating doughs.
Original Squishy Circuits link. Links for students include: TedX talk, Science Friday version of Squishy Circuits.
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