I don't know what I did to deserve best answer NoM, but thanks anyway :)
Apart from leek and potato, and the spicy butternut squash one, my soups tend to be made from whatever veg are hanging around. They get chopped up..no pre frying..bunged in a large pan with enough water to cover them and simmered for twenty minutes. I then add whatever seasoning I fancy, sometimes it's a stock cube, sometimes just salt and pepper, sometimes spice.
Depending on whether or not we fancy a thick soup, I remove half then whizz the remaining half in the pan with the whizzer, then return the unwhizzed veg to the pan.
Sometimes a tin of chopped tomato goes in, sometimes a tin of kidney or other beans, sometimes some pasta. We both just love soup, don't think I've ever made one of my 'leftover veg' ones which we haven't enjoyed.
I now need soup. Now. Immediately. :o)