Loads of fabulous things MissAdventure! Apart from the mask shops where you can even paint and decorate your own masquerade masks, there are Murano glass shops and dozens of gelateria shops. There's the Teatro Italia, a once beautiful cinema that had fallen into disrepair and is now a food emporium. The original frescoes on the ceilings have been fully restored and are stunning. They sell everything, including meat-free products, including ready-to-eat meals like vegan lasagna and eggplant parmesan, and even vegan Nutella, which will appeal to StarDreamer and you, I think.
Grazie for the link for Palazzo Contarini del Bovolo StarDreamer it was more beautiful than I'd ever imagined.