You need to blow it on your birthday, it's on the cake.
candle
It is filled with air and children can jump.
Bouncy Castle
Ribbons, balloons, this is....?
Decoration
Children love to eat them
Candies and lollypops
Something that you give on birthdays or Christmas.
Presents
A person that makes other people laugh at parties. Red nose, Pennywise
Clown
A rubber sac inflated with air, they are colorful.
Balloons
It is used to cover presents.
Wrapping paper
A thin tube made of plastic to drink soda or juice.
Straws
It is mandatory at a birthday party.
Cake