Distressed wood vanities with copper sinks work well in the rustic home too. It feels like you are camping, yet indoors with luxuries. The wood can be natural or painted depending on the homeowners preferences. Copper sinks in vessel styling on under counter mounts look good and work great. Some innovative homeowners will use reclaimed wood to custom build a vanity.
Natural stones work well in a rustic home as well. Think beyond the usual granite and marble. Consider a carved natural stone such as travertine or onyx. They can both be used as counter tops or sinks for a natural wood base such as cedar or redwood. Teak is an up and coming wood choice for bathroom vanities. It can stained or natural and is water friendly. One drawback is the cost as teak wood is usually a bit expensive.
When designing your own rustic vanity think outside the box. Let nature be your guide. Go outside and look around. What types of woods do you see that are natural to the area you live in? What other types of wood are used in your home? You may choose to look into alternative materials such as wicker or bamboo. Both can be used to make some rather unusual vanity pieces when paired with appropriate counter tops.
If you like color, then consider adding tiles to the vanity. Attaching colorful tiles can really add interest to a vanity and keep the natural rustic feel. Brightly painted Talavera tiles, terracotta tiles and more look just right when added strategically to a wood vanity. Tin and metal shapes can be used too. Just do not get carried away. When adding tiles to enhance a wood vanity, less is more.
Options are only limited by imagination. Get inspired by looking through magazines, books and internet resources to see what others have done. If your house is in the rustic style, there are many options to create rustic bathroom vanities as unique as you are.