Some of the most common places to hang coat hooks is by the front door of a home or in the bathroom, so your first concern should be how much space is available in the area in which you plan to hang the hooks. Another concern may be the materials used to make the hooks, as some materials are more durable than others and some coat hooks will be more resistant to water damage than others. Choose the hooks based on how many coats you suspect will be hanging at any given time, how much you want to spend, how much space you have available, and the overall aesthetic of the hooks.
The designs available for coat hooks vary significantly, from specialty designs to more all-purpose units. Decide if you will be hanging only one garment from the hook, or if you will be hanging many garments. This will narrow down your search significantly, and it will help you determine the aesthetic that is best for you. Single hooks can be made from a variety of materials and they are generally very easy to install. Such coat hooks are often found in bathrooms, on the backs of doors, or even near doorways. Choose one that will be both visually appealing when no garments are hanging from it, that will support the weight of the garment; heavier coats may need a metal hook rather than a plastic one that is hung with an adhesive rather than with screws.
If you will be hanging many garments on the coat hooks you are considering, think about where you will place the unit and decide what would look best in the space and what size would fit well. Take careful measurements of the space before purchasing any unit. Some coat hooks are built into a shelf unit that will allow you to hang coats and place keys or dog leashes on the shelf above the hooks. This is good for extra storage space and convenience when heading out the door.
Some decorative hooks will be more expensive than utilitarian models. Wrought iron, for example, is a common material for use as a coat hook, and while such material is visually appealing and very strong, it will come with a higher price tag than less expensive steel or aluminum hooks. If you are looking for more artistic and unique designs, plenty are available, but you should be sure to choose a design that is easy to install and one that will mount securely to the wall.