How to Say "party balloon" in Spanish
The Spanish word for “party balloon” is “globo” — A1 level. This is a very common word in everyday Spanish.

Examples
El niño soltó el globo y voló hacia el cielo.
The boy let go of the balloon and it flew toward the sky.
Compramos veinte globos rojos para la fiesta de cumpleaños.
We bought twenty red balloons for the birthday party.
¡Cuidado! Si pinchas el globo, explotará.
Be careful! If you prick the balloon, it will pop.
Gender Rule
Remember that 'globo' is a masculine word, so you must use masculine articles like 'el' (the) or 'un' (a/an) before it, and masculine adjectives after it.
Using the wrong article
Mistake: “La globo es grande.”
Correction: El globo es grande. (Since 'globo' is masculine, the article and adjective must also be masculine.)
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