1. Leek: Leek is a classic side dish for shrimp dumpling filling, which enhances the taste and aroma of the dumplings.

2. Tofu: Tofu is a nutritious ingredient that can be paired with shrimp to add texture and richness to the dumpling filling.

3. Shiitake mushrooms: Shiitake mushrooms can increase the texture and flavor of the dumpling filling, as well as increase the nutritional value of the dumpling filling.

4. Spinach: Spinach is rich in vitamins and minerals and can add nutritional value to shrimp dumpling filling.

5. Carrots: carrots are rich in carotene and vitamins, which can add color and nutritional value to the shrimp dumpling filling.

6. Green onion: Green onion can add aroma and taste to shrimp dumpling filling and also enhance the color value of the dumplings.