in the mount Meraken level after you've destroyed about 75 percent of the buildings and the fire comes out of the pipes, look into one that is not burning. You will see 3 easter eggs.
Droid in the Snow:
In the same level there are two landing platforms go to the one built against the mountain. Hover between the peek of the mountain and the platform. You will see a big pipe. If you're in the right position you'll see a little wite dot at the foot of the mountain. zoom in on that and you will see a droid building a snowman
Submitted by Tomas Rooimans