Simple one - shredded cabbage, onion and carrot, salt, lemon juice, rice vinegar, let rest, add pepper. Then you can mix it up by adding
Yoghurt and cucumber, dill, mint or chives
Beetroot vinegar, dill
Raspberry vinegar, thyme
Orange juice and thyme
Olive oil and basil or oregano/marjoram
Lime and wafer thin ginger, red chilli, coriander
Feta and mint
Sesame oil, toasted sesame seeds or tahini whisked up with a little hot water
Capers, olives, pickled garlic
Cheese stuffed preserved chilli peppers
Shredded broccoli, sesame and chilli
Switch out cabbage for fennel and blood oranges
Baby corn and edamame, coriander and sesame oil
Peanut butter, apple and thyme
Any other nuts, pulses and seeds you fancy.