Drills for 6 year old

My son is 6 he likes basketball and I like watching the kids play. The coach worked on dribbling, bounce passing and very basic stuff. Is there any good drills that my son and I can work on over the summer. Anything he and I could have fun doing. We do these a lot but there has to be some more we could do. http://www.breakthroughbasketball.com/fundamentals/7-fun-ways-for-parents-to-practice-skills-with-their-kids.html#.UuUJEYhL-5k.facebook