If your kids love to draw, or if you want to encourage them to do so, you could invest in a table that is especially designed for little artists in the making. These tables, first of all, are the right height for a child. They have a large surface for them to draw on as well. Some of them are equipped with a paper roll dispenser, so your child always has a lot of paper on hand. The paper can be torn off when a masterpiece is ready, and more paper can be rolled onto the desk.
I would have loved this as a child:
Kids craft table with paper roll pictured: Kidzpad 100-AT200E Activity Table, Espresso