I don't know about you, but at our house we have the bad habit of leaving the "emergency hidden house key" INSIDE the house after use. Or better yet, losing it entirely. Either way, next time you are locked out, you are really locked out.
Combine that with the places people usually hide there keys (under the mat, under that lone rock beside the door, etc.) and you really have a worthless system.
A friend put his key on a chain that barely reached from the hiding place to the door. Good idea, but if it's going to be any distance from the door (which it should) you have the bulk of the chain to hide and potential for tangles.
I wanted something retractable like my elementary school janitor had for his massive wad of keys. How about... a retractable clothesline? How about using it as the hiding spot too?
This worked out great once I narrowed the key so it could fit through the hole the cord goes through.
Check it out!
Step 1: What you need
1. Retractable clothesline with a large hole in the case where the line comes in and out. (I used a 40 foot line because it had the largest hole).
3. Grinder, hacksaw or other way to reduce the width of the key.
4. Tools for mounting the clothesline. I used a drill driver and two screws.