Toddlers Love to pretend. When you empty your egg carton, oatmeal box, yogurt containers, cottage cheese cartons and anything else you can think of, instead of putting them directly into the recycle, give them to your toddlers along with some plastic spoons and bowls and show them how they can pretend to cook.
The two 3-year-old kids I have in care Love to pretend they are cooking with these fun things!
There is no extra cost involved, and when the items are beyond well-worn, they can still go into the recycling.
Have fun and use your imagination to help your children learn to use theirs!