Eggs-Periments: Squishy Egg
It only takes three ingredients and some time to make a hard egg shell squishy!
Step 1
First get permission to use kitchen equipment and eggs. Then put a raw egg (in its shell) into a bowl and cover it completely with vinegar.
Step 2
Wait two days, then drain off the vinegar. When you touch the egg, it will feel rubbery. Be careful not to break the membrane, and wash your hands after you touch the egg. (Throw it away after a few days.)