I like Hellmanns real mayonnaise too, but will also mix sour cream or greek yoghurt with salt, pepper, and a bit of mustard, tomato paste, or fresh (whenever possible) herbs , e.g. chopped chives or dill. I'll sometimes use just neat olive or walnut oil over salad leaves, or the left over liquid containing herby, garlicy bits from one of my jars of olives. Tinned crab get the sour cream with lime juice, paprika, chopped coriander and a few capers.
The sour cream/yoghurt options also get warmed up a little to go with some of my hot meals.
Robbity