This seems like a good idea. Except for some of the designer door latch sets, I don't see much of a problem.

I like this idea. Perhaps you could magnatize the inside of the lock to pull the key inward.

I just checked. All of mine are inset. Not that it matters. We don't lock the handles anyway. We use the deadbolts.

This is what makes an already Good lock go to Great.

This sounds like a good idea. Of course, you can't make it too funnel shaped or it will be too deep. Then you wouldn't be able to get the key all the way into the lock without making the key inconveniently long. Someone suggested a magnetic key hole, but this wouldn't work because keys are almost always made of brass, which is not magnetic. They don't make iron or steel keys because it would be too hard to grind into shape by the locksmith.

It's pretty typical to have a very small funnel around the keyhole, but a larger one would risk getting things other than keys jammed in there.

Even better, have a light that turns on when it's grounded. You touching the metal key, which touches the lock plate would turn on a tiny LED light from within.

stop drinking

get a fingerprint scanning deadbolt. no keys, no worries