Add punctuation: For many people the Handi Life Sport brand is associated with the balls and the game of boccia
A: For many people, the Handi Life Sport brand is associated with the balls and the game of boccia."

Add punctuation: It should not be shared with other children even if they have similar symptoms
A: It should not be shared with other children, even if they have similar symptoms.

Add punctuation: The ondemand tankless water heater as the name implies works without a tank Basically it is a unit containing heating coils
A:
The on-demand tankless water heater, as the name implies, works without a tank. Basically, it is a unit containing heating coils.