[Greg Needel]

i won my schools in the 7th grade and promise that this will work everytime.

take a milk carton (one of those small ones from the cafateria)

get some pipe inslation (the black stuff by your water heater) availble at home dept

put a 1.5 x 1.5 peice on the bottom of the carton ( enough to cover the bottom)

then wrap 1 layer arround the egg
put wrapped egg in milk carton

put another piece of inslation on top and then close the carton

secure with rubber bands and you will win

we shot mine out of a slingshot prob 300 feet and no breaks. it will also be super light weight and in your size constraints