A potpourri of things is a collection of various different items which were not originally intended to form a group. a potpourri of architectural styles from all over the world. = miscellany
a mixture of dried fragrant plant material, often in a decorative bowl, used to scent a room
a collection containing a variety of sorts of things; "a great assortment of cars was on display"; "he had a variety of disorders"; "a veritable smorgasbord of religions"
{i} collection of dried and perfumed flower petals; mixture of various objects that are unrelated to each other; musical medley; literary collection of miscellaneous writings