Growing up, my mom taught us to set out 3 or 4 sheets of paper towels on the counter while baking cookies. The hot cookies would be placed on the towels after removing them from the cookie sheet. The cookies would leave a small butter/oil stain on the towel after you removed them, and it seemed like the towels were doing their job. At some point in my teens, I recall hearing a cooking professional discouraging the use of paper towels, saying they wicked away essential oils and flavors from the cookies. Since then, I had used cooling racks, which are more environmentally friendly, too.
These stackable cooling racks are great at saving counter space in a crowded kitchen. They come in sets of three, but I would recommend getting 2 sets, since it is possible that when you decide you need another set, you won't be able to find the same brand. I have 2 different sets, and they don't quite stack with the other set. I bent the legs on one to make it fit on the other set, but I sure wish they all matched and I could just reach for any 2 or 3 in the cupboard and not have to look closely.
Used individually, these racks are sturdy enough to hold a 9 x 13 pyrex dish while providing great airflow underneath.