What's the plural form of gimmickery? Here's the word you're looking for.
Answer
The noun gimmickery can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be gimmickery.
However, in more specific contexts, the plural form can also be gimmickeries e.g. in reference to various types of gimmickeries
or a collection of gimmickeries.