Knickknackery is commonly used to refer to a collection of small and miscellaneous items such as trinkets or curios. However, if you're looking for alternative words to describe this type of collection, there are a few options available. One possible synonym is "bric-a-brac," which refers to an assortment of decorative objects with little practical use. Another option is "tchotchkes," a Yiddish word for small decorative objects that are often cheap or of little value. Other possibilities could include "knick-knacks," "odds and ends," or even "baubles and trinkets." All of these words can be used interchangeably with knickknackery, depending on the context.