These little christmas bulbs have been designed to be light toppers on you strand of lights. Each design should have a small hole where you can place a hook like any other christmas bulb. I have made various shapes and sizes to choose from. the only support material needed is touching the base plate if you have the hole pointing upwards. With all the different christmas bulbs come a small Hearth ornament that the little flames inside glow. Do Not print the objects in dark colors for the light won't shine through at all. Semi-transparent PLA worked great for me. You may need to resize the objects on your slicing program to the appropriate size.