I love the AJC's "Find Five" Challenges.
It gives you two photos- an original photo and an altered original. The second photo has 5 things different from the original. Levels range from Easy to Medium and Difficult.
Check it out http://www.accessatlanta.com/games/find-five-challenge-test-81187.html
Slamdunk Carrot Cupcakes
7 hours ago