The thing about this Venetian that I really disliked was how crowded it was. It was so packed that it felt hectic (then again, I think I usually end up there around some sort of Chinese Holiday).
I really like this souvenir shop in particular (Macau Creations). This shop is just so artsy and adorable. You can find so much unique items (made by local artists) for adults and children. They even sell snacks too.
They do have another branch in the main island of Macau, but that one is more of a showroom (where you can gather a bunch of vendor's business cards).
I love their wonderful postcard selection (you can actually have them post it back home for you but we didn't use it. I think it was around $1 usd to send a postcard to the US (after you buy the postcard separately).