I found this:

http://www.instructables.com/id/Swiss-Army-Key-Ring/

I wonder how practical this would be? It would certainly eliminate the annoying occasional jingling that key do if they're in your pocket the wrong way. It could really be awkward having a car key on this though.

Also, this is entirely random, but I would advise never eating two cartons of Ben&Jerry's ice cream at the same time. OMG my tummy.

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Very cool, Wheeljack!

I agree, way cool!!! I usually keep my car key separate from the rest of my keys anyway. I heard somewhere that the weight of the key ring with lots of keys on it is not good for the ignition of the vehicle.

I might see if I could make one of these. It would be a fun project for whittling with my new SAK!

You could use an actual sak for this if you wanted, maybe add some metal sleeves around the pins that held the knife blades to make up the difference with the larger holes in keys. But I normally only carry three keys anyway, so this wouldn't be something worth bothering with for me.

very cool!

I like this. It's a good idea though I only have a few keys so I don't think I'd use one.

I love like. I was looking for a like button. Yes awesome Idea.

I don't like this one. Mine has never been used... I bought it for MAC memory.
And even at auction, I would not sell it. This knife is a Legenc....