With the tagline "Hang your keys like a Rockstar", the Jack Rack makes some lofty claims. But according to 47 reviewers on Amazon (and counting), the Jack Rack is living up to them.
They've patented their Pluginz Key Chains that use actual 1/4 musical input jacks. And don't limit yourself to keys, either. The jack is strong enough to handle BBQ tools, kitchen utensils, or anything else.
Each key holder comes with 4 key chains, and they've got around 7 different styles to choose from. The rig is running for $40 at Amazon.