I love my spider plant, and love the curtain of off shoots it sends out around the perimeter. However the top starts to get thin, and the parent plant droops. It is under a vent, so gets dry. I’ve increased the amount of water I give it, but it still doesn’t fill in. I used to root out the baby spider plants in water and replant, but they wouldn’t always take. So I have a new method. I keep the baby plant on its lifeline and set it in the soil. It is still getting support from the mother plant, but its base is touching the soil and moisture, which promotes root growth. When the baby is firmly established, then I cut the cord. It has worked several times so far. In the picture below I have used a twist tie to secure the cord to keep the little plant pressed into the dirt (else it goes flying back out with its siblings).