An indoor cat playpen or cat crate is an ideal place to keep your kitten safe and secure and still let it enjoy the outdoors or indoors. Kittens can get into almost anything indoors whether it be electric wires or tubs of water. It can also run outside and into danger without you knowing it.
  Cat Crate and Playpens resemble something like a huge bird cage. Locking your cat or kitten in a playpen is the ideal way to control your kitten's movements and keep him/her safe.  The crate or playpen should be large enough so he/she can move freely inside. These indoor cat kennels can also be good when introducing a new cat to a household where there is already a resident cat(s).