Most people use smart phone these days, so you can find and get some interesting App from the store, like “Call from Demon (Oni kara denwa)”. This App for mostly little kids. It will be helpful when kids don’t listen to their parents. You can pretend that some demon or ghost rings your phone. Demons face and name will show up on the screen. It’s very realistic so kids will be very surprised or scary. Also it’s fun so when you have chance, just try to download this App.