This is one of my rubber eggs it actually feels like rubber and, I put food coloring to make it green.
Step 1: Step 1: Ingredients
You need 1 egg, vinegar, 1 cup, and food coloring(optional).
Step 2: Step 2: the Mixture
Put the egg in the cup then pour in the vinegar and food coloring if you have some
Step 3: Step 3: Wait
Wait for about 2-3 days!