Parents with 2 or more toddler kids, how do you discourage jealousy among your children?

Never ever make your kids feel that you're favoring one of them. It will result into a catastrophe. The one who feels favored will be empowered, and may eventually pick at his/her sibling or think highly of himself/herself. The others may feel left out and stepped aside. If it's possible to share, by all means share. But if one can't have a thing, then the rest of the brood gets none.