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 Materials
 
Paper, ruler, marker, fasteners, tape
Brass paper fasteners, 1” or 1½” length; markers or felt-tip pens; duct tape; rulers; graph paper.

Scissors, nutcrackers, tin snips, salad tongs, hole puncher
Scissors, nutcrackers, tin snips, salad tongs, hole puncher
 
Additional mechanisms
At least six additional mechanisms per group. These might include can openers, eyelash curlers, glue stick or lipstick, tweezers, staple removers, egg beaters, ice cream scoops (with movable blades), folding chairs, ironing boards, pop-up books, etc. Some should be devices that incorporate more than one lever, such as nail clippers, can opener with rotating handle, corkscrew with two arms, vise grips, bicycle handbrake assembly, umbrella, tin snips, garden shears, pencil sharpener with clamp, pizza tray holder, pedal-operated wastebasket, ice cream scoop with thumb lever, etc.
 
Thin cardboard sheets (about 10”x10”) and strips (about 2”x10”) for making mechanisms; these can be obtained from discarded cereal boxes, overnight delivery envelopes, or thin cardboard cartons
Overnight delivery envelopes
 
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