Collecting Colors

My son is learning his colors, so one activity we do is walk around and collect objects that are that color.  When they are familiar to him, he seems to grasp the idea more easily.  I do the same thing with geometry in the classroom, or assign it for homework.
"Find as many examples of a rectangular prism as you can tonight at home and list them."
- cereal boxes, boxes of pasta, Kleenex box, TV, etc

Here Sam and I are working on collecting blue objects.