As children we used to love coming home from school and fed 'tatty patties' for our tea. They were cheap and cheerful and made a very good filler for children growing up just after the war. I've made them on and off all my life and tweaked them every time by adding whatever is seasonal
The basic recipe can be used as the springboard for your imagination. Try adding finely chopped fresh chillies or some finely flaked left over fish. Fresh herbs bring their own flavours. Basically, try anything!