Patio lights are an excellent way to relax outdoors and spend time with friends and family after the sun goes down. Patio lights come in many different designs - from practical bulbs to novelty beer cups - and they add an air of warmth to any yard. The most popular patio light designs come in strings, lights infused with citronella oil to keep mosquitoes away, and old fashioned streetlamp-style patio lights. Most patio lights are made of plastic or glass and are available in a wide selection of colors. The cost of patio lighting depends highly on the material and design of the lights - for example plastic lights are generally less expensive than glass lights. You can find patio lights at most any garden store, home improvement store or lighting retailer.