Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
This would work fine, except in terms of success.

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Key Catcher

A device to catch anything that falls through the gap between elevator doors.
  (+4, -1)
(+4, -1)
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Sure, we could all get big, round keychain attachments, but this problem is really larger than just lost keys. This device could move into place as the door opened. It could just be a net of some kind, or it could be a slat that fills in the gap. Whatever. We just need something to prevent dropped keys from going down the elevator shaft.
centauri, May 29 2001

Perhaps a variation on this idea DocumNets
[normzone, Jan 19 2006]

[link]






       Or we could just not drop them, it has always worked for me.
SunTzu, Aug 15 2003
  

       all you have to do is call maintenance and they'll go below the elevator and get whatever you dropped for you. Happened in my building to someone.
thejini, Aug 16 2003
  

       A novelty keychain made of a soft nylon fabric cover filled with puffy polyfill would stop keys from falling down elevator gaps and car seat gaps. Would also have limited floatation properties.   

       Material is highly compressible to fit in pockets and purses. Big enough to keep you from leaving keys at the restaurant table and help you find them in the morning.
wombat, Aug 16 2003
  

       A compressed air capsule, a balloon, and a motion sensor. If the motion sensor registers freefall acceleration, the capsule inflates the balloon, and the owner screams with rage after realising that while the motion sensor was attached to the keyring, the capsule and balloon weren't. And are, in fact, still in his rapidly expanding trouser pocket.   

       Plan B: the sensor, capsule and balloon _are_ attached to the keyring, the balloon inflates, keeps the keys from falling down the lift-crack / drain / overly inquisitive child's gullet, and the day is saved.
friendlyfire, Aug 16 2003
  

       [friendlyfire]'s version could be useful for anything that doesn't like being dropped, like hard disk drives, glass, and children.
neilp, Aug 16 2003
  

       HE HE HE, Imma Call and tell Homer Simpson... DOE
SpeedkillZ, Jan 19 2006
  

       //A novelty keychain made of a soft nylon fabric cover filled with puffy polyfill//   

       I think you are referring to "airfoam"
Dickcheney6, Apr 16 2008
  

       //all you have to do is call maintenance and they'll go below the elevator and get whatever you dropped for you.// And it's not that hard for them to do. They would have a harder time maintining one more moving part.
Jscotty, Apr 17 2008
  
      
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