Chop:
Red onion
Vine tomatoes
Cucumber
Greek Kalamata Olives
Feta cheese

Sprinkle:
Salt
Oregano

Then add
Extra virgin olive oil
Red wine vinegar

Works fine just on its own, or you could have it with bread (or rye bread). The cost will depend on where you get the ingredients from. Remember to slow down when you make this; and then try to slow down to engage with the colours, smell, texture and taste.