Community Egg Drop

June 24, 2017, 12:00 pm to 2:00 pm

Calling all intrepid inventors! Design an egg vehicle at home, bring it to the Mahomet Library and compete in a community Egg Drop challenge. The youth librarian will drop the eggs from the roof of the library. 

The rules are listed below. (Here is a printable copy of the rules.)

Registration requested so we have enough eggs.


  1. You may build your vehicle using anything from the materials listed below, but you do not need to use all the materials. 

  2. Your finished vehicle must measure no more than 12” in any direction (12”x12”x12” cube).

  3. Bring your vehicle to the library without an egg inside.  Library staff and volunteers must be able to load the vehicle with an egg. (Grade large eggs provided by the library.)

Materials List
  • 10 regular drinking straws (straight or bendy)

  • 25 wooden toothpicks (regular size)

  • 25 popsicle sticks (regular size, any color)

  • 10 small cotton balls

  • 1 meter of string (You may cut it into smaller segments.)

  • 50 cm of masking tape OR scotch tape, no wider than 1” (25mm)

  • 6 rubber bands (any size or color)

  • 10 paperclips (any size; you may change their shape)

  • 10” square of cardboard (You may cut it into smaller segments.)

  • EITHER: 3x 5 oz paper Dixie cups OR 3 empty toilet paper tubes (You may NOT use both!)

  • Glue (Elmer's, Gorilla, hot glue, or super glue)


A panel of library staff and volunteers will judge the devices based on the following criteria:

1. The egg remains intact. If any of the egg yolk or white spills, the design is disqualified.

2. The egg that survives the fall will be the winner.

3. In case of a tie, the judges will determine a winner based on the following.

  • The size and weight of the design: most points awarded for lighter and smaller vehicles. 

  • Ease of operation: most points awarded to the device that is the easiest to load.

  • Creativity and engineering practice: most points awarded to the device that demonstrates the most creative design solution, the greatest knowledge of physical sciences, and the greatest craftsmanship.

  • Durability of the device: most points awarded to the device with the least damage by the end of the competition.

  • Discretion of the judges


Each vehicle with an egg that survives the fall will receive a prize. In addition, judges will choose the following award winners:

  • Humpty Dumpty Award– the device with the egg that breaks in the most spectacular fashion

  • 1st Place Winner

  • 2nd Place Winner

  • 3rd Place Winner