Note: with my preschooler, I let him hold the measuring cup over the mixing bowl while I pour the salts. He can dump them in the bowl and help me count. I also let him do the stirring after I add the oils. We try to keep it all in the bowl as we stir but it gets a little messy. When it comes time to fill the jars, I have him use a funnel and a metal spoon. It takes a lot more scoops, but he gets to participate and be in a little control. He always has pride watching someone open this gift, knowing he made it wit his hands!