Some thoughts...
No laps - kids can get conditioning from drills where they have a ball at their feet
Maximum ball touches. Everything should involve lots of touches on the ball.
Here's a warmup we use with our travel team to emphasize ball touches:
Everything was done from one touchline to the other, so 70ish yards. But can certainly be less.
Put foot on ball and roll it forward/backward with ball of foot. Now try rolling it left/right so you're touching the ball almost with the side of the cleat from left to right. Good building block skill. How fast can you do it. Can you do it without looking at the ball?
Inside/Outside. With right foot, touch the ball with the inside then the outside of the foot every step. Right foot cannot touch ground without touching the ball first. Repeat for left foot
Ring the bell/Tic-Tocs - Touch the ball with right foot then left - no foot touches ground without touching the ball first. Don't swing feet sideways - focus on lifting knees nad making quick touches on the ball.
Toe taps - always a great warmup (tap ball with bottom of each foot while pretty much hopping)
Rolling - face direction your'e going with left shoulder. Pull ball towards your body with right foot by dragging cleats across top of the ball. Keep ball behind you but try to keep ball moving -body is going sideways (lead with your shoulder) So always pull the ball towards the front of your body from the side. Tricky at first, but great ball skill to use for more advanced stuff later
Juggling juggling juggling. Helps develop a soft touch
Quick pass - into a wall or hard surface. See how many times he can bounce the ball off the wall, standing a yard or so away, in 2 minutes. Try to do better each time.
Passing with you - always good. Always be moving as you pass vs standing still. 1v1 is ALWAYS a good thing. Throw a cone/bucket in the ground and defend it while he tries to hit it with the ball.
Try to keep it fun. Much of what I describe here is boring on teh surface (thus we use it mainly for warmups, etc) but you can craft challegnes/scoring/etc around much of this.
There are tons of other drills. Check out http://soccerxpert.com/
