A smooth surface can result in splayed leg problems. If I am raising a single chick I try to keep an infertile egg in the incubator with the fertile egg. When the chick hatches the infertile egg will help support the chick and help maintain body heat. Do not use any egg that may be contaminated or have decaying material inside. I also use a small stuffed toy with some of my chicks.
Many pet stores sell small toys that are made of acrylic lambs wool type material.
These can be easily cleaned in the washer. Once the chick is transferred into the brooder it is time to start feeding. The first 2 feedings are Pedialyte with a small amount of a probiotic mixed in. Use Pedialyte that is unflavored. Handfeeding formula will be added after the first two feedings.