You can never go wrong with a solid keychain one-piece multitool. With the right materials and size, they can go on your keychain without a second thought, but be up to heavy tasks at a moment's notice. Dave and Calvin Laituri make up Onehundred, a product design firm out of Wayland, MA and makers of the Tuls series of wallets and pocketable multitools. Taking feedback from their earlier offerings, their latest project is the Kiki, a tiny and efficient tool with no fuss or excess. At 2.5” long, 3mm thick, and laser-cut from 304 stainless steel or titanium, the Kiki won't let you down. Common tools like drivers, a pry end, and bottle opener make an appearance on the Kiki, with its broad sides marked with rule notches for handy measurements. It's at home on your keychain or as a zipper pull, with an included leather sheath to dress it up along with the rest of your carry.
The Kiki is fully-funded as of this writing, so pledge for your own in the material and sheath of your choice at the link below.