The small egg is a small egg that is connected to The medium sized egg due to prongs made of egg whites. This egg doesn't contain any random objects, since the eggshell is too thick.
50% of this egg is the eggshell, so no random objects are in here. However, there is a spinning light in the middle of The small egg that makes strobe lights. These are slowly taking away the shell of this egg.
Instead of egg whites, this egg only contains water. 61% of the egg is filled up with water, so everything that you toss in floats.
Since there is water, sometimes the water creates bubbles. These bubbles are strange, since they can go right through the eggshell and create objects in The medium sized egg. This has led people to believe that the bubbles are "building blocks" for the random things in The medium sized egg.