Item Suggestions:
Cake: Give a ball +4 HP but -1 attack
Chili: Give a ball +4 attack but -1 HP
Battery: Give a ball +1 HP, an addition +3 if level 2 or higher
Bed: Give all balls on squad +1 HP
Mother: Either increase a ball's HP by 5 or decrease every other ball's attack by 1 unless 2 or lower.
Collage Cords: If you have 8 or more wins, double a ball's attack or HP, with 50/50 chance.