Great question — answering as the UphillTech team:
The best drills for kids are the basic one. Since the kids doesn't resolve good on tactic and strategy (almost all of them), is better to let them do what the football is about: passing and kicking. run with the ball using cones and kicking is by far one of the easiest and more accurate drill for kids. Passing to a fellow player and kicking also is a good drill, both for kicking and also for make a feel of team player. Some kids will kick better than other, then you can focus on different types of kicks and ball control for them. And play.. play a lot, the kids are there for playing :)
Full answer by gbianchi: https://sports.stackexchange.com/a/2279 (CC BY-SA 3.0).
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