2. Customers rave about the wide selection of costumes and accessories available at McCulloch's Costume & Party Supplies. They also appreciate the helpful staff who assist in finding the perfect size and ensuring a great fit. Positive comments highlight the friendly and above-and-beyond service provided by the team, making it a go-to place for all party needs. 6. Unique facts about McCulloch's Costume & Party Supplies include being a family-owned Canadian business established in 1962, specializing in costume sales and rentals, Easter and Christmas costumes, mascots, and balloon bouquets for any occasion. The company has a long-standing reputation for quality products and excellent customer service in Southern Ontario. 7. McCulloch's Costume & Party Supplies specializes in costume sales and rentals, featuring a large inventory of costumes and accessories for various events, including Plus sizes. The store is a one-stop-shop for all party needs, offering a unique and memorable experience for customers and making every celebration hassle-free and enjoyable with their personalized balloon bouquets.