Both of these pieces are handy, inexpensive additions to a kitchen that can help you maximize space. However, microwave carts are usually on wheels, whereas baker’s racks are stationary pieces of furniture. Although both types of furniture may give you shelving storage, a microwave cart is built specifically to hold one heavy appliance at arm’s level. It may be possible to store a microwave on a baker’s rack, but you should check its weight capacity first because some baker’s racks are not built to withstand that kind of weight.