The batter for the aloo pyaz pakoras is so versatile, you can use it with a lot of other veggies too. Cauliflower, cabbage, bell peppers, carrots, green beans, broccoli, beetroot, okra, eggplant, sweet potatoes, and practically any other veggie you can think of.  To make the fritters more healthy, you can also add in chopped kale, spinach, or any other greens you have at hand.  You can chop your veggies into bite-sized pieces or julienne them. Remember that the cooking time for each veggie will differ, so it makes sense not to pair them all together.