I recently came accross a nice easter egg provided by the Google Android Team - as they often do it - on my galaxy tab s1.
By visiting the Settings page and typing multiple times on the version number (4.0.2), it opens an android in a sandwich.
By taping around, it gets bigger. Finally, it becomes like a kind of Nyan cat of droids without sound.
This was so funny I decided to try the same on my phone which runs on JellyBean.
Note how the jelly seems happy to draw attention from important men. The background picture is mine, not Android's of course.