http://www.verticalraingarden.com/top-rain-barrel-gardens-under-200/algreen-barcelona-100-gallon-rain-barrel/ Add style to your backyard or patio with a rain barrel garden! All you need is a simple DIY rain barrel kit and you can be done in an hour. Many rain barrel gardens includes all the materials you need to collect rainwater, including a water tank, spigot and hose. Some harvesting systems may need a rain barrel diverter, but you can place your container under a gutter downspout and avoid this additional cost! Thinking about making a rain barrel from scratch? Stop!