Abstract: A support which is insertable into a bag to enable drink cups or other containers to be carried upright in the bag. The support comprises at least two vertical panels which are hinged together, and which define partitions that meet at and extend outwardly from the hinge line. Floors are foldably hinged between adjacent partitions. Wedge-shaped, cup-receiving compartments are formed between the angulated partitions, and are closed at their outer ends by the walls of the bag. The support, in collapsed configuration, is inserted downwardly into a bag and is erected by swinging the partitions apart and seating the outer ends of the partitions in corners of the bag to maintain the bag open. The support floor resides against the bottom of the bag.