Everything you need in one keychain, the iPhone Lightning Cable Multi-Tool Keychain!
What in the heck did I just write? Did I just write a freaking charger from a multi-tool set IN A KEYCHAIN? Wow, the world really is progressing towards flying cars. For just $10, you have yourself an iPhone charger, a bottle opener, and a keychain to hang your keys to. I don’t know what else you need on the fly, really. The main thing is that you’re avoiding any types of tangles and it’s pretty much weightless before keys.