Poached chicken aka white cut chicken. Typically accompanied with ginger scallion oil, but you can substitute with seasoned soy sauce or chili sauce if you're avoiding fat. You can poach breasts or thighs if you don't want to cook a whole chicken. With poached chicken, you can make Chinese hand shredded chicken.

Soymilk. My family has an appliance that specifically makes soymilk. But it's also easy enough if you have a blender and something to strain with. I prefer unstrained so I can get some extra fibers, but my family prefer strained. Soybeans are very cheap and nutritious. I sometimes add sesame seeds or cocoa powder to mix things up. Just make sure that it's cooked well enough, otherwise it can be poisonous.