Originally Posted By: duckear
one of these would work

I think you are right, my wife has a bunch of these ... I might have to borrow one smile.

The only thing I'm wondering about is the strength. I'm guessing they are stronger than the plastic glove clasp, but would they be too strong given the desired "break away" functionality for a neck lanyard?
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Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen