This is what I do. Just form a small rock inside of your plastic sheeting and put the post part of a solar light in it. Once the rock has cured, add the top of the solar light on and place in your garden. Especially great if you have landscape barrier down and don't want to punch through it. If the solar light quits working, replace the head with another light fixture. I have about 8 of these placed throughout my flower gardens. Plan to make a bunch more.