Your child has already mastered carrying their own plates and utensils to the sink, rinsing, and loading them into the dishwasher.  As they mature, the natural transition is to carry serving bowls and pans and put away all other food and products left on the table.

Again, set them up for success by having an order to your refrigerator and pantry.  Have lots of Ziplock-type bags and plastic storage containers for them to save leftover food.  If you want to keep single meals, teach them about portion size and how you want to do that.

Then, have them spray and wipe off the table.  If you keep napkins, salt, pepper, or butter on the table, have them make sure to refill those items as needed.