Sprout salads - Chop (finely) vegetables, and sprouts (soaked pulses, such that a small tap root appears) - mix well, add some sauce to your preference (i just add seasoning and lemon juice, you can add something like mayo, youghurt, or salsa). You can also add some crunchy element (something like fried crisps, or any favorite item) - these will serve as a different texture, and the hero element of your dish which can invite kids. Also, you can have the kids add the these, so they can feel happy in knowing what they added, and overlook veggies in salad underneath.