The prospect of buying furniture that can last from the cradle into your child's teen years and beyond can be enticing. These days, you can buy cribs that convert to toddler or even full-sized beds. They're a great choice if you're sure you won't need a crib in the future, too. Some changing tables with onboard storage convert to simple dressers as well. Both of these furniture options make the task of converting a nursery to a kid's room easier. You may be able to buy a dresser and changing table separately for less than you'd pay for a convertible unit, so keep that in mind when you shop.