Joh, you can apply the same principle as the zucchini slice to any vegetable that you possess. I chuck in things like cold cooked pumpkin and potatoes (leftovers), sweetcorn and peas (out of the freezer - doesn't involve standing there chopping), frozen spinach, cubed feta cheese (ok because it's been cooked) and even sometimes walnuts or pinenuts. If there's no grated zucchini, I just leave out the flour, add and extra egg or two, and call it a fritatta. Hahaha

Zucchini or potato omelette is another quick but yummy one.

The thing I really thought of for you was the Mccormacks soup bases. You get them at the shops in the soup aisle, close to the lentils and split peas etc. They are the soup mix (lentils and barley, etc) in a little packet with the powdered flavouring, all you have to do is add the water, and throw in whatever veggies you have to hand. They have a country veggie one and a minestrone one and they are both yummy & quick. You could add an extra can of lentils or chickpeas or some grated cheese for serving if you want a protein boost!