5. Custom DesignsThe variety of vanity designs today makes it easy to find what you need in terms of design and storage, but many designers still recommend looking into a custom design for greater efficiency. "Custom vanities are not always more expensive than store bought," says Adamson. "And they have endless design styles and configurations." "Don't forget that your bowl doesn't have to be in the middle," says Hethmon. Like the sink in this photo, a sink bowl that's slightly off center allows for more countertop space. Consider your bowl size, too. "Bigger, deeper bowls can mean less mess to clean up," Hethmon points out.