Using lava and stone make a challenge where you must jump from one block to another. Remember that in PE Steve can only jump one blocks length.
Use ladders and stone to make it where you must use ladders to get to the other side of the wall.
Make stairs and a blocks jump so when at the top the player will be surprised.
Make this pattern jumps.
You're done! Please comment about what you want me to make next but no negative comments!:)