The present studies (N = 159) investigated children's and adults' preferences for label and property conjunctions for cross-classifiable toys. In Study 1, 4-year-olds, 5-year-olds, and adults participated in a labelling and property attribution task involving experimental toys that belong to two categories and control toys that belong to only one category. In Study 2, the same age groups were tested on a version of the task focusing on the control toys. In Study 3, 4- and 5-year-olds were tested on a modified version of the labelling and property attribution task involving the experimental and control toys. Finally, Study 4 tested a younger age group, 3-year-olds. Overall, the results indicated that by age 3 years, individuals prefer assigning experimental toys (but not controls) with joint labels that are a conjunction of two single category labels. By age 4 years, individuals prefer assigning experimental toys (but not controls) with dual properties that are a conjunction of two single properties. These results document the development of how different types of toys elicit preferences for conjunctions of labels that denote membership in two distinct categories and conjunctions of properties that combine features of these categories.