Every player should have the following for every practice and every game:

Soccer Ball
U08 - Size 3
U10 - Size 4
U12 - Size 4
U14 - Size 5

Shin guards 
  Socks over the shin guards
SOCCER cleats (no toe cleat)
Water (enough for the entire practice or game)
Uniform (practice shirt, jersey, socks and shorts)
Hair not obstructing vision