Try getting a mix of veggies, Just spinach cant fulfill all your body's needs. I did read that if you were to eat only one kind of veggetable, Broccoli is the best. I went through a phase when I ate broccoli at lunch AND dinner for about six months because I craved it, but then I got so sick of it.
If you dont like veggies, try blending them in a soup with some cheese (preferable a strong sheese like cheddar so you need less to taste it) or eating them raw with a lot of your favorite low fat dip (like dill cucumber).
Otherwise, go for fruit.