I picked up a drill from another coach and thought it was pretty good. I used it this season to begin the season for my U8 team and it went very well. It's pretty simple, but you get 3 skills involved in one drill. The throw-in, trapping the ball, and dribbling.
You begin by having about half your kids along a sideline and half at a cone at about 10 o'clock about 8/10 yards away. Basically set up a triangle. Have the kids do a running throw-in from the sideline towards an imaginary point between the cone and the sideline. The child at the cone runs from the cone, traps the ball and then dribbles around a cone set out parallel or a bit further down the sideline. He/she then dribbles down the sideline to prepare to do a throw-in.
Thanks To: Marc Noble, U8 NW Lions