Balloonery is a unique word that has a limited number of synonyms that can accurately describe its meaning. The word can be replaced with terms like "balloon art," "balloon twisting," or "balloon sculpture." The general theme behind these synonyms is that they all relate to the act of creating and manipulating balloon structures. Other options may include phrases like "balloon decor" or "balloon arrangements," which would be more appropriate in a commercial context. Ultimately, the most effective synonym for "balloonery" will depend on the context in which the word is being used and the desired tone or emphasis of the message that is being conveyed.