Balloon

A balloon is a flexible bag that can be inflated with a gas, such as helium, hydrogen, nitrous oxide, oxygen, or air.

Physical appearance
Balloons are made of materials such as rubber or latex, and can come in a variety of colours. Strings can be wrapped tightly around the neck, to carry the balloon, without actually having to hold it directly.

Season one
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Appearances

 * Scooby-Doo, Where Are You!
 * 117. That's Snow Ghost