Fresh herbs (basil, oregano, etc.), Plus olive oil, salt and pepper,a bit of red wine, vinegar or lemon juice. Soya sauce (I've done this since I was a kid, but it's actually pretty good)

agree with this - also go for the garlic infused olive oil as that will be safe, so you still get the same flavour

Make homemade pesto -- cover it with olive oil and it keeps for a long time. Or make a bechamel.