Meet the Carabinsi: a smart carabiner with NFC technology and a whole host of other features to get you unstuck. It holds your keys and has a bottle opener, a can opener, a wrench tool, and a glass breaker. The NFC chip inside lets you program your carabiner to do what you want. The developers are offering 4 products for you to check out (Jimi, Jimi tool, Billy, and Billy Tool). The tool version does not have a logo or NFC.
Carabinsi replaces multiple tools and does not take a whole lot of space. The NFC version of it is particularly interesting. You can find this product on Kickstarter.