In addition to the cat toys, now is the time to teach your baby cat to use a scratching post. I recommend buying a medium sized cat tree that is covered with carpet. This tree will provide your kitten with hours of entertainment plus the cat tree will be their place a safe area to scratch.
I recommend that before you handle any stray or feral kitten that you make sure that you have on protective clothing; arms and legs covered with long sleeve shirt and if possible a jacket plus leather gloves to protect your hands. Helpful to be current with your tetanus shot. Other than than enjoy the kittens as they are babies for only a short time.