Children are our helpers. While they are small, and fun - all to help adults. Do not stop them, not throw, when you take up household chores. If the cleaning - they with a broom and a rag if the washing - they are happy to wash, if the cooking - find the job in the kitchen. They can work with you to knead the dough, make a salad, set the table, wash the dishes, to rearrange the pots.
It does not matter if something will break or be broken. It is important not to allow them to hot to not get burned, and does not give sharp knives. And of course, don't leave them in the kitchen alone.