You are about to come across a delightful dish known as shrimp in lobster sauce which is, essentially, egg drop soup plus shrimp. If there's anything lobster about it in most places it might be some stock, but really it's just egg drop thickened with corn starch with shrimp, peas and maybe some other veg over rice.
If you take your egg drop soup leftovers out of the fridge cold and add a little bit of cornstarch, you can add it to your hot wok right after removing your shrimp fried rice and have yourself some yummy snacks.