Kitten's First Home
Having a sturdy box for your kitten is important. You can use a clean, strong cardboard box or better still, an inexpensive see-through Rubbermaid box. Carefully cut a large section out of the lid (about the size of a large dinner plate) place screening over the hole and tape securely with duct tape. You can also drill small air holes along the sides of the box, provided you are keeping this box out of the direct flow of air. This allows the kitten to get fresh air but keeps him safely in his box, especially when he gets older and starts moving around a lot more. It also makes it easy to check on him without having to remove the lid.
As your kitten grows and needs more room for his litter pan and food, move him to a bigger box. Make sure the sides are tall enough that your kitten can't climb out and become injured or lost. If you are using a cardboard box, be sure and drape a towel over the top of the box, leaving a bit of space for air. Use clothespins to fasten the towel securely to the box. Make sure the kitten can get air. You can cut small windows in the side of the box as long as they are high enough on the sides to not put air directly on the kitten.