If u can put up some posters with your number and a small reward.Especially in local shop.Ask neighbours to look in sheds ect.put some catfood out in a trail up your drive.Go with someone to look around.It will come back im sure when its bored,Stay up and look at 2 in the morning in your garden thats when they usually come home.hope you find kitkat
also you could write on facebook to your friends so they can help with the finding :) post things through peoples door around the neighbourhood :) hope you find you kitten. hope this helps :)
Make up flyers you can put on street posts, put an ad on Kijiji or similar sites. Ask your neighbors to keep an eye out for it. Ask friends to come help and search your neighborhood.
Look for it.