Each group needs:

• Two, plastic two-liter bottles or two desks (If unable to gather enough two-liter bottles, make a tightrope with the string between two desks, or use coat hangers, as in the Perching Parrot activity.)
• String (about 2 ft. long)
• Cardboard (cereal boxes or paper plates work well) or tagboard.
• Paper clips
• Scissors
• Rulers
• Markers