It's a sad day when I'm bored with all the games on my iPhone. On those days that I'm over Candy Crush and Bejeweled Blitz, I'll turn to this clever case ($30) that has a built-in, good old-fashioned maze. Guide the little ball to the finish and raise your hands in analog victory.
And if games aren't your thing, there's also the "Undecided" case that shoots a ball through aPlinko-like gauntlet of pins to eventually settle in the Yes or No column. Great for making serious life decisions like what college to go to. (I kid.)