General Collective Nouns:
* Set of teacups
* Collection of teacups
* Assortment of teacups
More Creative Options:
* Tinkle of teacups (referring to their sound when clinking)
* Posy of teacups (evoking a delicate and charming image)
* Nest of teacups (suggesting warmth and coziness)
Ultimately, the best collective noun depends on the context and the specific image you want to convey.