This is a color sorting activity I made from my ABA days. I used pictures of preferred items for the clients I had in mind (and many others) such as robots, dinosaurs, legos, transformers, Disney's Cars, crayons, food, characters from Rio and Monsters vs. Aliens.
Red, Orange, Yellow, Green, Blue, Purple, Pink, Brown, Black, Grey, & White
What a difference it can make when you use motivating materials!!!