I have been thinking about hacking my boring door bell for years. I want want mine to knock on the door when the door bell is pressed. The guys over at PopSci have come up with a cool way to make what they call a Ding Tone Door Bell, have a look it looks like fun.

“If you’ve got a spare MP3 player laying around your home, it’s time to hack your household doorbell system and create your own customized “dingtone.” Just like your cell phone’s ringtone, you can change your dingtone to match the season or your mood. Our seasonal dingtone selection? Bing Crosby’s “I’ll Be Home for Christmas;” natch.”

Via: Hack N Mod