For teacher demonstrations (optional):

• touch-screen phone or tablet
• thin winter gloves
• 2 balloons, one small and one large
• wax paper and foil capacitance sensor

To make a capacitance sensor, each group needs: 

• 3 pieces of wax paper, each cut into a roughly 29 cm x 21.5 cm (11.5 in x 8.5 in) rectangle (Link)
• piece of foil cut into a roughly 25 cm x 18 cm (10 in x 7 in) rectangle
• 2 pieces of foil cut into a rectangle with a tail, roughly 25 cm x 18 cm (10 in x 7 in) with a tail that sticks out about 4 cm (1.5 in) from the rectangle (Link)
• 2 pairs of scissors
• clear tape
• clear sheet protector (Link)
• 2 paper clips
• 2 rulers
• marker 

To test a capacitance sensor (teacher can choose to have 1 set up for sensor testing or multiple), you will need: 

• set of red and black alligator clips to banana plugs that have 1 meter wires (Link)
• capacitance tester OR digital multimeter that can measure capacitance in nanofarads (nF) (Link)

To make a seat cushion, groups can share: 

• scissors
• gallon large Ziploc bags
• Any squishy materials that you can find including:
• foam
• packing peanuts
• cotton balls
• fabric
• cardboard
• packing materials like bubble mailers