Keep stringy material away from your kitten, except under your supervision. Items like string, yarn, fishing line and thread attached to a needle can be lethal if swallowed. Close toilet lids, and make sure the fireplace is tightly screened. Secure unscreened windows. Cats may jump out of open windows.
Cats often lean into screens as they nap, so secure the screens on all other windows.
Contrary to popular belief, cats don't always land on their feet when they fall and can be seriously injured. Close all garage and appliance doors. A warm dryer or a car engine may entice cats in search of a warm place to nap. Immediately place opened tin or aluminum cans behind closed doors or in containers with secure lids. The edges of these cans are extremely sharp and can cut or sever your cat's tongue.