Epic Mickey is pretty obviously rife with Disney lore, there are likely some easter eggs you missed. Maybe the game's camera refused to point at them (sorry, couldn't help ourselves) or maybe you just aren't versed enough in Disneyology to spot them all.
Fear not, as Topless Robot has a list of 10 of the biggest you may not have picked up on. Our favorite? The secret basketball court inside the Matterhorn, which you'll find recreated in Mickeyjunk Mountain. If you still haven't gotten your fill of secret Disney nods, you can find even more at GamesRadar.