Connect different to complete the circuit

Most fruits and vegetables work great.

Lots of other foods work too. We've tried marshmallows, gummy candies, macaroni and cheese, cupcakes, shrimp, and lots of other things.

Plants can work too. Try some leaves or flowers, but nothing too dry.

Play-Doh, Model Magic and other clays work very well as long as they stay moist.

People are conductive! Connect one person to ground, and another to an input, and you can trigger sounds when they high-five.

Graphite from a pencil can work. Make thick, dark lines, and be sure to draw on a smooth surface.

Foil and other metal objects will work. Try out coins, magnets, nuts and bolts, forks and knives, or pots and pans.