Google vinaigrette shaker. There are lots of different versions but those I have found the most useful to have measurements down the side . At the moment I have one with an integral whisk (fine if you're going to use straight away)
You can either make it up before a meal or to save time make up basic dressing in larger batches decant them in a lidded jar/bottle for later use.
Basic proportions are 3 of oil to one of vinegar+ seasoning and perhaps crushed garlic.
Vary the vinegar, red, white, cider, balsamic , sherry,raspberry, lemon juice
vary the oil, olive, walnut, sesame. The oil from bottled roast peppers or sundried tomatoes. Truffle oil!
Add herbs.
Add spices; smoked paprika is one of my favourites.
add mustard, soy, plain yoghurt
(but not all at the same time!)
I don't think the French normally add any sugar/sweetner (except perhaps with lemon juice) I certainly don't find it necessary.
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