Minnie Mouse Happy Helpers Party Supplies. Minnie and Daisy are happy to help YOU celebrate your next birthday! Minnie Mouse and Daisy Duck are all hands on deck to throw you the best birthday party you've ever had. You will find a large selection of Minnie Mouse Happy Helpers party supplies all at our usual discount prices. Don't forget to add a splash of color with coordinating solids in Magenta, Fresh Mint, and Lucious Lavender.