It was a classic real-life problem: an opened can, a moment of inattention, and suddenly there’s a puddle—then a few minutes later the drink starts losing its fizz. I wanted a solution that’s simple, compact, and 3D-printable, with no extra parts. That’s how the “locker” was born—an element that gives you control over the can opening: it stabilizes it, reduces splashing, and helps slow down going flat.